Make sure that we perform builtin detection for "fontconfig" and
"Xrender" first. This avoids using the builtin "Xft2" if the builtin
"fontconfig" is reject.

This fixes another regression caused by the "pango" upgrade and the fix
for PKG pkg/47882.
Remove dependence on "Xft2" package. "cairo" doesn't use this library.
Bump the package revision because of this change.
Revert change to "PKG_SETENV":
1.) It breaks the build of "www/firefox" which gets upset if "SHELL" is
    not defined in the environment. There are probably more packages
    which similar problems.
2.) It breaks established use case like this one:

	export ALLOW_VULNERABLE_PACKAGES=yes
	cd pkgsrc/multimedia/ffmpeg2theora
	bmake install

    In this case the value of "ALLOW_VULNERABLE_PACKAGES" will not be
    passed to the build of "pkgsrc/multimedia/ffmpeg". And the build of
    this package will fail due to known vulnerabilities.
Correct home page URL.