graphics/geeqie: add missing dependencies, patch useless warning

This adds missing dependencies for nondefault options.
(Two items for USE_GNOME actually snuck into the previous commit already,
my apologies for missing that in the commit message. r557035)

It also patches out a useless "CFLAGS+=... not found" warning from
the "make configure" phase. We can't currently use -Werror anyways
for building geeqie with our GTK3 version (deprecation warnings).

Approved by: portmgr@ (blanket, dependencies)