e.g. x509parse_crtfile -> x509_crt_parse_file

Changes include:
 - Integers marked with '#' in the .function files.
 - Strings should have "" in .data files.
 - String comparison instead of preprocessor-like replace for e.g. '=='
 - Params and variables cannot have the same name in .function files

 - Changed the behaviour of x509parse_parse_crt for permissive parsing. Now returns the number of 'failed certificates' instead of having a switch to enable it.
 - As a consequence all error code that were positive were changed. A lot of MALLOC_FAILED and FILE_IO_ERROR error codes added for different modules.
 - Programs and tests were adapted accordingly

 -  Added permissive certificate parsing to x509parse_crt() and x509parse_crtfile(). With permissive parsing the parsing does not stop on encountering a parse-error

 - mpi_init() and mpi_free() only accept a single argument and do not accept variable arguments anymore. This prevents unexpected memory corruption in a number of use cases.

 - Fixed bug resulting in failure to send the last certificate in the chain in ssl_write_certificate() and ssl_write_certificate_request()