Fix alternative ECP function names

The alternative Elliptic Curve Point arithmetic functions didn't have
an 'mbedtls_' prefix as required by check-names.sh.
diff --git a/include/mbedtls/ecp_internal.h b/include/mbedtls/ecp_internal.h
index 67a3de2..a91e9d8 100644
--- a/include/mbedtls/ecp_internal.h
+++ b/include/mbedtls/ecp_internal.h
@@ -27,56 +27,56 @@
 
 #if defined(MBEDTLS_ECP_FUNCTION_ALT)
 
-unsigned char ecp_alt_grp_capable( const mbedtls_ecp_group *grp );
+unsigned char mbedtls_ecp_alt_grp_capable( const mbedtls_ecp_group *grp );
 
 #if defined(MBEDTLS_ECP_INIT_ALT)
-int  ecp_alt_init( const mbedtls_ecp_group *grp );
+int  mbedtls_ecp_alt_init( const mbedtls_ecp_group *grp );
 #endif
 
 #if defined(MBEDTLS_ECP_DEINIT_ALT)
-void ecp_alt_deinit( const mbedtls_ecp_group *grp );
+void mbedtls_ecp_alt_deinit( const mbedtls_ecp_group *grp );
 #endif
 
 #if defined(MBEDTLS_ECP_RANDOMIZE_JAC_ALT)
-int ecp_randomize_jac_alt( const mbedtls_ecp_group *grp, mbedtls_ecp_point *pt,
+int mbedtls_ecp_randomize_jac_alt( const mbedtls_ecp_group *grp, mbedtls_ecp_point *pt,
                            int (*f_rng)(void *, unsigned char *, size_t),
                            void *p_rng );
 #endif
 
 #if defined(MBEDTLS_ECP_ADD_MIXED_ALT)
-int ecp_add_mixed_alt( const mbedtls_ecp_group *grp, mbedtls_ecp_point *R,
+int mbedtls_ecp_add_mixed_alt( const mbedtls_ecp_group *grp, mbedtls_ecp_point *R,
                        const mbedtls_ecp_point *P, const mbedtls_ecp_point *Q );
 #endif
 
 #if defined(MBEDTLS_ECP_DOUBLE_JAC_ALT)
-int ecp_double_jac_alt( const mbedtls_ecp_group *grp, mbedtls_ecp_point *R,
+int mbedtls_ecp_double_jac_alt( const mbedtls_ecp_group *grp, mbedtls_ecp_point *R,
                         const mbedtls_ecp_point *P );
 #endif
 
 #if defined(MBEDTLS_ECP_NORMALIZE_JAC_MANY_ALT)
-int ecp_normalize_jac_many_alt( const mbedtls_ecp_group *grp,
+int mbedtls_ecp_normalize_jac_many_alt( const mbedtls_ecp_group *grp,
                                 mbedtls_ecp_point *T[], size_t t_len );
 #endif
 
 #if defined(MBEDTLS_ECP_NORMALIZE_JAC_ALT)
-int ecp_normalize_jac_alt( const mbedtls_ecp_group *grp, mbedtls_ecp_point *pt );
+int mbedtls_ecp_normalize_jac_alt( const mbedtls_ecp_group *grp, mbedtls_ecp_point *pt );
 #endif
 
 #if defined(MBEDTLS_ECP_DOUBLE_ADD_MXZ_ALT)
-int ecp_double_add_mxz_alt( const mbedtls_ecp_group *grp,
+int mbedtls_ecp_double_add_mxz_alt( const mbedtls_ecp_group *grp,
                             mbedtls_ecp_point *R, mbedtls_ecp_point *S,
                             const mbedtls_ecp_point *P,
                             const mbedtls_ecp_point *Q, const mbedtls_mpi *d );
 #endif
 
 #if defined(MBEDTLS_ECP_RANDOMIZE_MXZ_ALT)
-int ecp_randomize_mxz_alt( const mbedtls_ecp_group *grp, mbedtls_ecp_point *P,
+int mbedtls_ecp_randomize_mxz_alt( const mbedtls_ecp_group *grp, mbedtls_ecp_point *P,
                            int (*f_rng)(void *, unsigned char *, size_t), 
                            void *p_rng );
 #endif
 
 #if defined(MBEDTLS_ECP_NORMALIZE_MXZ_ALT)
-int ecp_normalize_mxz_alt( const mbedtls_ecp_group *grp, mbedtls_ecp_point *P );
+int mbedtls_ecp_normalize_mxz_alt( const mbedtls_ecp_group *grp, mbedtls_ecp_point *P );
 #endif
 
 #endif /* MBEDTLS_ECP_FUNCTION_ALT */
diff --git a/library/ecp.c b/library/ecp.c
index 7f48e38..97fcd01 100644
--- a/library/ecp.c
+++ b/library/ecp.c
@@ -753,9 +753,9 @@
         return( 0 );
 
 #if defined(MBEDTLS_ECP_NORMALIZE_JAC_ALT)
-    if ( ecp_alt_grp_capable( grp ) )
+    if ( mbedtls_ecp_alt_grp_capable( grp ) )
     {
-        return ecp_normalize_jac_alt( grp, pt );
+        return mbedtls_ecp_normalize_jac_alt( grp, pt );
     }
 #endif /* MBEDTLS_ECP_NORMALIZE_JAC_ALT */
     mbedtls_mpi_init( &Zi ); mbedtls_mpi_init( &ZZi );
@@ -807,9 +807,9 @@
         return( ecp_normalize_jac( grp, *T ) );
 
 #if defined(MBEDTLS_ECP_NORMALIZE_JAC_MANY_ALT)
-    if ( ecp_alt_grp_capable( grp ) )
+    if ( mbedtls_ecp_alt_grp_capable( grp ) )
     {
-        return ecp_normalize_jac_many_alt(grp, T, t_len);
+        return mbedtls_ecp_normalize_jac_many_alt(grp, T, t_len);
     }
 #endif
 
@@ -930,9 +930,9 @@
 #endif
 
 #if defined(MBEDTLS_ECP_DOUBLE_JAC_ALT)
-    if ( ecp_alt_grp_capable( grp ) )
+    if ( mbedtls_ecp_alt_grp_capable( grp ) )
     {
-        return ecp_double_jac_alt( grp, R, P );
+        return mbedtls_ecp_double_jac_alt( grp, R, P );
     }
 #endif /* MBEDTLS_ECP_DOUBLE_JAC_ALT */
 
@@ -1028,9 +1028,9 @@
 #endif
 
 #if defined(MBEDTLS_ECP_ADD_MIXED_ALT)
-    if ( ecp_alt_grp_capable( grp ) )
+    if ( mbedtls_ecp_alt_grp_capable( grp ) )
     {
-        return ecp_add_mixed_alt( grp, R, P, Q );
+        return mbedtls_ecp_add_mixed_alt( grp, R, P, Q );
     }
 #endif /* MBEDTLS_ECP_ADD_MIXED_ALT */
 
@@ -1115,9 +1115,9 @@
     int count = 0;
 
 #if defined(MBEDTLS_ECP_RANDOMIZE_JAC_ALT)
-    if ( ecp_alt_grp_capable( grp ) )
+    if ( mbedtls_ecp_alt_grp_capable( grp ) )
     {
-        return ecp_randomize_jac_alt( grp, pt, f_rng, p_rng );
+        return mbedtls_ecp_randomize_jac_alt( grp, pt, f_rng, p_rng );
     }
 #endif /* MBEDTLS_ECP_RANDOMIZE_JAC_ALT */
 
@@ -1483,9 +1483,9 @@
     int ret;
 
 #if defined(MBEDTLS_ECP_NORMALIZE_MXZ_ALT)
-    if ( ecp_alt_grp_capable( grp ) )
+    if ( mbedtls_ecp_alt_grp_capable( grp ) )
     {
-        return ecp_normalize_mxz_alt( grp, P );
+        return mbedtls_ecp_normalize_mxz_alt( grp, P );
     }
 #endif /* MBEDTLS_ECP_NORMALIZE_MXZ_ALT */
 
@@ -1514,9 +1514,9 @@
     int count = 0;
 
 #if defined(MBEDTLS_ECP_RANDOMIZE_MXZ_ALT)
-    if ( ecp_alt_grp_capable( grp ) )
+    if ( mbedtls_ecp_alt_grp_capable( grp ) )
     {
-        return ecp_randomize_mxz_alt( grp, P, f_rng, p_rng );
+        return mbedtls_ecp_randomize_mxz_alt( grp, P, f_rng, p_rng );
     }
 #endif /* MBEDTLS_ECP_RANDOMIZE_MXZ_ALT */
 
@@ -1569,9 +1569,9 @@
     mbedtls_mpi A, AA, B, BB, E, C, D, DA, CB;
 
 #if defined(MBEDTLS_ECP_DOUBLE_ADD_MXZ_ALT)
-    if ( ecp_alt_grp_capable( grp ) )
+    if ( mbedtls_ecp_alt_grp_capable( grp ) )
     {
-        return ecp_double_add_mxz_alt( grp, R, S, P, Q, d );
+        return mbedtls_ecp_double_add_mxz_alt( grp, R, S, P, Q, d );
     }
 #endif /* MBEDTLS_ECP_DOUBLE_ADD_MXZ_ALT */
 
@@ -1686,9 +1686,9 @@
         return( ret );
 
 #if defined(MBEDTLS_ECP_INIT_ALT)
-    if ( ecp_alt_grp_capable( grp )  )
+    if ( mbedtls_ecp_alt_grp_capable( grp )  )
     {
-        MBEDTLS_MPI_CHK( ecp_alt_init( grp ) );
+        MBEDTLS_MPI_CHK( mbedtls_ecp_alt_init( grp ) );
     }
 #endif
 
@@ -1707,9 +1707,9 @@
 #endif
 
 #if defined(MBEDTLS_ECP_DEINIT_ALT)
-    if ( ecp_alt_grp_capable( grp ) )
+    if ( mbedtls_ecp_alt_grp_capable( grp ) )
     {
-        ecp_alt_deinit( grp );
+        mbedtls_ecp_alt_deinit( grp );
     }
 #endif
 
@@ -1816,9 +1816,9 @@
     MBEDTLS_MPI_CHK( mbedtls_ecp_mul_shortcuts( grp, R,   n, Q ) );
 
 #if defined(MBEDTLS_ECP_INIT_ALT)
-    if ( ecp_alt_grp_capable( grp )  )
+    if ( mbedtls_ecp_alt_grp_capable( grp )  )
     {
-        MBEDTLS_MPI_CHK( ecp_alt_init( grp ) );
+        MBEDTLS_MPI_CHK( mbedtls_ecp_alt_init( grp ) );
     }
 #endif
     MBEDTLS_MPI_CHK( ecp_add_mixed( grp, R, &mP, R ) );
@@ -1827,9 +1827,9 @@
 cleanup:
 
 #if defined(MBEDTLS_ECP_DEINIT_ALT)
-    if ( ecp_alt_grp_capable( grp ) )
+    if ( mbedtls_ecp_alt_grp_capable( grp ) )
     {
-        ecp_alt_deinit( grp );
+        mbedtls_ecp_alt_deinit( grp );
     }
 #endif