[arch-dev-public] flex 2.5.34 - build x86_64 and signoff

flex 2.5.34-1 is up for i686. I still haven't gotten myself going for x86_64 builds yet, so would appreciate someone doing that. Also a minor version update. Drops the patch that was previously needed, as it appears to have been integrated. Cleaned up the install slightly, put the lex shell script in a separate file. - P