Merge mbedtls 2.16.6 into baremetal

Conflicts:
mbedtls.doxyfile - PROJECT_NAME - mbed TLS v2.16.6 chosen.
doc_mainpage.h - mbed TLS v2.16.6 version chosen.
hmac_drbg.h - line 260, extended description chosen.
            - line 313, extended description chosen.
            - line 338, extended description chosen.
version.h - 2.16.6 chosen.
CMakeLists.txt - 2.16.6 chosen.
test_suite_version.data - 2.16.6 chosen.
Makefile - 141 - manual correction - baremetal version of C_SOURCE_FILES
                 with variables for directories plus 2.16.6 CTAGS addition.
pkparse.c - lines 846 onwards - the asn1_get_nonzero_mpi implementation chosen.
ssl_tls.c - line 5269 - edited manually, left the ret=0, because baremetal has
            a different behaviour since commit 87b5626, but added a debug
            message that's new in 2.16.6.    
all.sh:
- component_build_deprecated - chosen the refactored version from 2.16.6,
                               but with extra flags from baremetal.
- rest of the _no_xxx tests - merged make options to have PTHREAD=1 and
                              other changes from 2.16.6 (like -O1 instead of -O0).
- component_build_arm_none_eabi_gcc_no_64bit_multiplication - added 
                              TINYCRYPT_BUILD=0 to the 2.16.6 version of make.

x509/req_app.c - left baremetal log but with mbedtls_exit( 0 ) call.
x509/crl_app.c - left baremetal log but with mbedtls_exit( 0 ) call.
x509/cert_app.c - left baremetal log but with mbedtls_exit( 0 ) call.
ssl/ssl_mail_client.c - left baremetal log but with mbedtls_exit( 0 ) call.
ssl/ssl_pthread_server.c - left baremetal log but with mbedtls_exit( 0 ) call.
ssl/ssl_fork_server.c - left baremetal log but with mbedtls_exit( 0 ) call.
ssl_client1.c - line 54 - left baremetal log but with mbedtls_exit( 0 ) call.
ssl_client2.c - line 54 - left baremetal log but with mbedtls_exit( 0 ) call.
              - line 132 - new options of both branches added.
              - skip close notify handled as in 2.16.6, but with `ssl` instead of `&ssl`.
              - Merged the 2.16.6 usage split with additional baremetal usages.
              - Merged options from baremetal and 2.16.6.
ssl_server.c - left baremetal log but with mbedtls_exit( 0 ) call.
ssl_server2.c - Merged the 2.16.6 usage split with additional baremetal usages.
config.pl - fixed missing defines from the documentation, removed duplicates,
            and reorganised so that the documentation and excluded list
            are ordered in the same way.
test_suite_x509parse.data - only added the two new pathlen tests.
x509_crt.c - change the return code by removing
             MBEDTLS_ERR_X509_INVALID_EXTENSIONS, since it's added by
             x509_crt_frame_parse_ext not by an "or", but by "+=".
Changelog - Assigned all entries to appropriate sections.
ssl-opt.sh - line 8263 - merged options.
           - removed lines 1165 - 1176 - there was a duplicate test, probably
             an artifact of previous merges.
check-files.py - sticked to old formatting.

Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
diff --git a/visualc/VS2010/mbedTLS.vcxproj b/visualc/VS2010/mbedTLS.vcxproj
index 27813da..0e57881 100644
--- a/visualc/VS2010/mbedTLS.vcxproj
+++ b/visualc/VS2010/mbedTLS.vcxproj
@@ -21,7 +21,7 @@
   <PropertyGroup Label="Globals">

     <ProjectGuid>{46CF2D25-6A36-4189-B59C-E4815388E554}</ProjectGuid>

     <Keyword>Win32Proj</Keyword>

-    <RootNamespace>mbedTLS</RootNamespace>
+    <RootNamespace>mbedTLS</RootNamespace>

   </PropertyGroup>

   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />

   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">

@@ -45,7 +45,6 @@
     <UseDebugLibraries>false</UseDebugLibraries>

     <WholeProgramOptimization>true</WholeProgramOptimization>

     <CharacterSet>Unicode</CharacterSet>

-    <PlatformToolset>Windows7.1SDK</PlatformToolset>

   </PropertyGroup>

   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />

   <ImportGroup Label="ExtensionSettings">

@@ -85,7 +84,7 @@
       </PrecompiledHeader>

       <WarningLevel>Level3</WarningLevel>

       <Optimization>Disabled</Optimization>

-      <PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;_USRDLL;MBEDTLS_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;_USRDLL;MBEDTLS_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>

       <AdditionalIncludeDirectories>../../include</AdditionalIncludeDirectories>

       <CompileAs>CompileAsC</CompileAs>

     </ClCompile>

@@ -100,7 +99,7 @@
       </PrecompiledHeader>

       <WarningLevel>Level3</WarningLevel>

       <Optimization>Disabled</Optimization>

-      <PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;_USRDLL;MBEDTLS_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;_USRDLL;MBEDTLS_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>

       <AdditionalIncludeDirectories>../../include</AdditionalIncludeDirectories>

       <CompileAs>CompileAsC</CompileAs>

     </ClCompile>

@@ -117,7 +116,7 @@
       <Optimization>MaxSpeed</Optimization>

       <FunctionLevelLinking>true</FunctionLevelLinking>

       <IntrinsicFunctions>true</IntrinsicFunctions>

-      <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;MBEDTLS_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;MBEDTLS_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>

       <AdditionalIncludeDirectories>../../include</AdditionalIncludeDirectories>

     </ClCompile>

     <Link>

@@ -135,7 +134,7 @@
       <Optimization>MaxSpeed</Optimization>

       <FunctionLevelLinking>true</FunctionLevelLinking>

       <IntrinsicFunctions>true</IntrinsicFunctions>

-      <PreprocessorDefinitions>WIN64;NDEBUG;_WINDOWS;_USRDLL;MBEDTLS_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN64;NDEBUG;_WINDOWS;_USRDLL;MBEDTLS_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>

       <AdditionalIncludeDirectories>../../include</AdditionalIncludeDirectories>

     </ClCompile>

     <Link>