glib-2.0: convert from autotools to meson

glib-2.0: convert from autotools to meson

PRINTF settings no longer seem necessary (tested with mingw).

Add meson-specific bits to Enable-more-tests-while-cross-compiling.patch and
0001-Install-gio-querymodules-as-libexec_PROGRAM.patch

Add 0001-Set-host_machine-correctly-when-building-with-mingw3.patch
to allow 'mingw32' as target machine in addition to 'windows'.

Add 0001-meson.build-do-not-hardcode-linux-as-the-host-system.patch to
correct ARM build errors.

Drop configure-libtool.patch (autotools-specific).

Fix API docs generation

Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>