Compile with language C by default
Compile with language C by default.
This should enable easier use with macOS.
- Added command line options, seen with
compile-gvec-tp -h
- The "--compiler" option can now take the four compilers available in pyccel ("GNU" is the default, "intel", "PGI", "nvidia"). Moreover, a JSON file can be specified to define a custom compiler (see pyccel doc).