- explicitly depend on textproc/p5-Text-Tabv (if ${PERL_LEVEL} >= 501800)
- bump PORTREVISION

This patch was also suggested by upstream:
 https://bugzilla.mozilla.org/show_bug.cgi?id=1067285

PR:		196060
PR:		196100
Submitted by:	mva@


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@374914 35697150-7ecd-e111-bb59-0022644237b5