I've included a diff against the last (19991203) snapshot RPM scripts that
adds what I think is required for Cygwin support. Basically all this boils
down to is adding EXE extension support. I've added the AC_EXEEXT rule to
conifgure.in (requires a valid 'cc' to work - this is not available in the
standard Cygwin distro). Each of the *.spec.in have @exe_ext@ includes in
them for each program that results in an EXE. The only odity here is that
the chill driver program is a shell script and thus does not require .exe to
be added... The mk*.in have all been updated to process the new exe_ext
rule.