autotools: dist Meson build system files

So that people can build with Meson when using the tarballs.

Fixes #424

Makefile.am

@@ -55,6 +55,32 @@ EXTRA_DIST += \
 	cairo-version.h \
 	$(NULL)
 
+# Meson build system files
+EXTRA_DIST += \
+	meson.build \
+	meson_options.txt \
+	boilerplate/make-cairo-boilerplate-constructors.py \
+	boilerplate/meson.build \
+	src/meson.build \
+	test/make-cairo-test-constructors.py \
+	test/meson.build \
+	test/pdiff/meson.build \
+	util/cairo-fdr/meson.build \
+	util/cairo-gobject/meson.build \
+	util/cairo-missing/meson.build \
+	util/cairo-script/meson.build \
+	util/cairo-sphinx/meson.build \
+	util/cairo-trace/meson.build \
+	util/meson.build \
+	meson-cc-tests/atomic-ops-cxx11.c \
+	meson-cc-tests/ipc_rmid_deferred_release.c \
+	meson-cc-tests/ft_has_color.c \
+	meson-cc-tests/mkdir-variant-1.c \
+	meson-cc-tests/pthread.c \
+	meson-cc-tests/atomic-ops-gcc-legacy.c \
+	meson-cc-tests/mkdir-variant-2.c \
+	$(NULL)
+
 DISTCLEANFILES += config.cache
 
 MAINTAINERCLEANFILES += \