fix pty.t test failures on linux
Bump to 0.93_01 for test release to CPAN
Address RT 100858 Concerning GPL 2.0 address discrepancies.

IANAL, but the discrepancies between IPC::Run's GPL 2.0 and the license documented
at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt were significant, so I
just went ahead and dumped it in.