[arch-dev-public] dropping version from libdir in firefox and thunderbird

[Ionut Biru]

Hi,
both apps generates a .desktop file that contains the Exec option from 
/usr/lib/app/$pkgver and every time we update we must set up the default 
browser/email.

Since new versions are released every 6 week, it started to be annoying 
and with version 8, we are dropping the version.

Be sure your extensions are installed in the right directory.


-- 
Ionuț