remove unused roles[].femalenum, races[].femalenum

remove unused roles[].femalenum, races[].femalenum

and rename {roles,races}[].malenum to {roles,races}[].mnum.

Pull request #653 from entrez.  Male and female player character
monsters are no long separate even when their title's differ and all
the entries for femalenum in the roles[] and races[] arrays were set
to NON_PM (meaning not used in this case).

The update in the pull request overlooked win/Qt/qt_plsel.cpp which
had four references to .malenum so this is more than just the fixes
entry.

Closes #653