Add miscellaneous unpackaged files to dist tarball

Various files are in git but not in dist tarballs. Some of them look
like potentially useful references for downstream distributors.

Signed-off-by: Simon McVittie <smcv@debian.org>

demos/gtk-demo/Makefile.am

@@ -116,6 +116,7 @@ EXTRA_DIST += 				\
 	data/symbolic-source.svg	\
 	demo.gresource.xml		\
 	$(resource_files)		\
+	makefile.msc.in			\
 	org.gtk.Demo.gschema.xml	\
 	demos.h.win32	\
 	meson.build	\

docs/Makefile.am

@@ -8,6 +8,7 @@ EXTRA_DIST += \
 	developers.txt			\
 	dnd_internals.txt		\
 	focus_tracking.txt		\
+	iconcache.txt			\
 	RELEASE-HOWTO			\
 	sizing-test.txt			\
 	styles.txt			\

docs/reference/gtk/Makefile.am

@@ -385,6 +385,7 @@ HTML_IMAGES = \
 	$(srcdir)/images/pagesetupdialog.png				\
 	$(srcdir)/images/placessidebar.png				\
 	$(srcdir)/images/popup-anchors.png				\
+	$(srcdir)/images/popup-at.svg					\
 	$(srcdir)/images/popup-flip.png					\
 	$(srcdir)/images/popup-slide.png				\
 	$(srcdir)/images/printdialog.png				\

gtk/Makefile.am

@@ -1752,10 +1752,15 @@ EXTRA_DIST +=                   \
 	$(gesture_sources)	\
 	$(theme_sources)	\
 	$(gsettings_SCHEMAS)	\
+	compose-parse.py	\
 	emoji/convert-emoji.c	\
 	emoji/emoji.json	\
+	emoji/emoji1.json	\
 	a11y/Makefile.inc	\
 	deprecated/Makefile.inc	\
+	glade/README.glade	\
+	glade/gtk-private-widgets.xml \
+	gtk-compose-lookaside.txt \
 	inspector/Makefile.inc	\
 	libgtk3.manifest.in	\
 	gtk-win32.rc.body.in	\
@@ -1784,7 +1789,13 @@ EXTRA_DIST +=                   \
 	deprecated/meson.build \
 	inspector/meson.build \
 	theme/Adwaita/meson.build \
-	theme/HighContrast/meson.build
+	theme/Adwaita/parse-sass.sh \
+	theme/Adwaita/render-assets.sh \
+	theme/HighContrast/assets.svg \
+	theme/HighContrast/assets.txt \
+	theme/HighContrast/meson.build \
+	theme/HighContrast/parse-sass.sh \
+	theme/HighContrast/render-assets.sh
 
 
 -include $(top_srcdir)/git.mk

tests/Makefile.am

@@ -549,6 +549,8 @@ testglblending_SOURCES =	\
 listmodel_SOURCES = listmodel.c
 
 EXTRA_DIST += 			\
+	apple-red.png		\
+	dialog.ui		\
 	gradient1.png		\
 	testgtk.1 		\
 	testgtk.css		\
@@ -573,7 +575,15 @@ EXTRA_DIST += 			\
 	mydialog.ui		\
 	mydialog2.ui		\
 	popover.ui		\
+	popover2.ui		\
+	popupat.ui		\
 	selectionmode.ui	\
-	meson.build
+	meson.build		\
+	testapplication.desktop	\
+	testcolorchooser2.ui	\
+	testplacesview.c	\
+	testrc.c		\
+	testthreads.c		\
+	testtreeview-plan.txt
 
 -include $(top_srcdir)/git.mk

testsuite/gdk/Makefile.am

@@ -34,6 +34,7 @@ CLEANFILES = 			\
 	$(NULL)
 
 EXTRA_DIST += \
+	check-gdk-cairo.c	\
 	meson.build
 
 if BUILDOPT_INSTALL_TESTS