List of changes:
- modified Autotools, CMake and Android build systems
- increased heap size as new version requires additional 64B
- replaced deprecated API (mbedtls_ecdsa_sign_det)
- removed workaround with defining mbedtls_ecp_restart_ctx
This commit applies the patch directly to checked-in source files rather
than at build time. This commit helps to simplify the build process.
This commit also introduces a shell script that allows anyone to reproduce
the patched mbedtls source.