- Add missing run dependency on perl
- Fix shebangs
- Allow building with either giflib 4.2 or 5.0


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@375619 35697150-7ecd-e111-bb59-0022644237b5
Allow building with either giflib 4.2 or 5.0


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@375620 35697150-7ecd-e111-bb59-0022644237b5
Use a custom keyword for kldxref, that allows to control exactly when it is run
and work nicer with automatic directly support from pkg

Differential Revision:	https://reviews.freebsd.org/D1377
Reviewed by:	rene, antoine
Approved by:	rene


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@375621 35697150-7ecd-e111-bb59-0022644237b5