Update Freetype to 2.1.9 and fix www/firefox and www/mozilla to build with new Freetype.
This supercedes ports/68747.
This also adds a patch to Freetype that fixes problem with added support for vertical phantom points fixed in Freetype CVS in rev. 1.132 of ttgload.c. Furthermore it adds a patch for pkgconfig to add ${prefix}/include to CFLAGS from anholt in ports/68747.
The fix for Firefox and Mozilla is taken from Mozilla Bugzilla #234035 (patch #149334). A different path has been chosen by Mozilla developers for future versions of Firefox and Mozilla (so mozilla-devel port doesn't need patching) but that approach seems to invasive for current versions of ports (discussion is in mentioned bugzilla entry). These patches should therefore be removed when updating to next Mozilla/Firefox major releases.
Another patch is needed for Mozilla - it is taken from NetBSD pkgsrc (named patch-by), but since it patches the same file as extra-patch-nsSVGLibartGlyphMetricsFT.cpp it has been added to that one and another extra patch (extra-patch2-nsSVGLibartGlyphMetricsFT.cpp) is applied in cases the first one is not. extra-patch2-nsSVGLibartGlyphMetricsFT.cpp should be removed upon upgrade to next major Mozilla release and at least the corresponding part of extra-patch-nsSVGLibartGlyphMetricsFT.cpp removed.

Fix: added/removed files:
print/freetype2:
  added files:
    files/patch-builds::unix::freetype2.in
    files/patch-src::truetype::ttgload.c
  removed files:
    files/patch-src::type1::t1load.c

www/mozilla:
  added files:
    files/extra-patch2-nsSVGLibartGlyphMetricsFT.cpp
    files/patch-bugzilla149334
  removed files:
    files/patch-gfx_src_gtk_nsFontMetricsXft.cpp

www/firefox:
  added files:
    files/patch-bugzilla149334