Only build libmbedcrypto

Update build scripts and tools to only build or update libmbedcrypto.
diff --git a/tests/Makefile b/tests/Makefile
index 90880aa..aba002b 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -16,9 +16,9 @@
 LOCAL_CFLAGS += -D_POSIX_C_SOURCE=200809L
 
 ifndef SHARED
-DEP=../library/libmbedcrypto.a ../library/libmbedx509.a ../library/libmbedtls.a
+DEP=../library/libmbedcrypto.a
 else
-DEP=../library/libmbedcrypto.$(DLEXT) ../library/libmbedx509.$(DLEXT) ../library/libmbedtls.$(DLEXT)
+DEP=../library/libmbedcrypto.$(DLEXT)
 endif
 
 ifdef DEBUG