Added 'use strict' to pmload, pmls, pmpath, and pmvers
Added incomplete 'use strict' to podgrep (need comments for 'define variables')
Added 'pminclude' to list the include directories (@INC)

1) Added 'pminclude' to list the include directories (@INC). This is easier
   for lazy people (like me) than 'perl -V | tail' (and pminclude only lists
   the include directories). Inspired by a similar tool in my PHP Module Tools.