Patch out the chunk of GLib's configure script that looks for
libintl. Take care of fallout in a couple of places in GLib
sources. The end result is that GLib doesn't use any libintl (gettext
etc) functionality. Which is nice, as we then shouldn't need to build
gettext. No functionality should be lost, as we weren't delivering any
GLib message catalogs anyway, so none of the gettext calls at least
here would ever have found any localised messages.
Pass --build and --host options to the configure script. Pass a bunch
of a priori cached test results for stuff that can't be determined
when cross-compiling. Link with the CoreFoundation framework. Build
static archives.
Patch out the compile-time USE_LIBICONV_GNU and _LIBICONV_H test from
gconvert.c as it for some reason fails for iOS.
