* Remove unneeded ${VARS} variable.
* add a blank line after PKGREVISON for readability.
* remove unneeded --with-rcdir and --enable-gnutls=no from CONFIGURE_ARGS.
* reorder part of CONFIGURE_ARGS for a little more readability.
* explicitly enable jpeg/png/tiff.
* change a LOCALBASE reference to PREFIX (pkglint warning).
* remove write permission from a set-uid program (checkperms warning).
* add "set -e" in front of shell for loops (pkglint warning)
* explicitly enable/disable dnssd and gssapi in options.
* exactly disable python and java support same as perl and php
* pdftops filter is installed unconditionally, so change
PKG_OPTIONS_GROUP.pdftops to REQUIRED_GROUP
* xpdf does not install pdftops tool anymore and using it came from
poppler-utils. so deprecate xpdf option and suggest poppler option instead.
* change gs option to ghostscript from option.description.
* exactly select "gs" or "pdftops" and tell its path to configure script.
* change ghostscript dependency from DEPENDS to USE_TOOLS.
* exactly disable gssapi support with "-kerberos" option.
pdftops only seems to be a link to an existing pdftops, so add
an option to use the ones from gs, poppler-utils, or xpdf.
Default to using the one from poppler-utils (adds dependency on that).
Bump PKGREVISION.
