ssl_helpers.c is treated with W3 warning level in MSVC complier.
So that it's reported as error for warning of conversion from
size_t to int. This change fixes all this type of warning seen in
Microsoft Visual Studio 12.0. Besides, some potential problems of
type conversion are also handled.
Signed-off-by: Yanray Wang <yanray.wang@arm.com>
tests/src/ssl_helpers.c depends on functions defined
in library/*.c. If it's complied as an OBJECT with other c files,
cmake complains undefined reference in link stage under programs/.
Therefore, tests/src/test_helpers/ is created to hold c files with
dependency of library/*.c. Besides, tests/src/test_helper/*.c is
separated into another OBJECT, mbedtls_test_helpers, as sources
to build all test suite executables.
In addition, everest header directory is included in case
MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED is enabled.
Signed-off-by: Yanray Wang <yanray.wang@arm.com>
