Tests now function under all three of the supported compilers on
Windows environments. [Randy W. Sims]Will now install to the 'core' perl module directory instead of to
'site_perl' or the like, because this is the only place MakeMaker
will look for the xsubpp script.Explicitly untie and close the output file handle because ParseXS was
holding the file handle open, preventing the compiler from opening
it on Win32. [Randy W. Sims]Added an '--output FILENAME' flag to xsubpp and changed ParseXS to use
the named file in the #line directives when the output file has an
extension other than '.c' (i.e. '.cpp'). [Randy W. Sims]Added conditional definition of the PERL_UNUSED_VAR macro to the
output file in case it's not already defined for backwards
compatibility with pre-5.8 versions of perl. (Not sure if this is the
best solution.) [Randy W. Sims]