Add capability to build extension zip-files

Now, typing "make zip-file" will create a standard zip-file for each
extension, with everything necessary, including translations and GSettings schemas.
These files can then be installed with the tweak-tool or uploaded
at extensions.gnome.org

Based on an earlier patch by Jasper St. Pierre.

Cherry-picked from master. The zip file contains everything that is
needed for extensions, but schemas and translations are not loaded
from there, as convenience.js cannot be supported in 3.2

Makefile.am

@@ -3,3 +3,24 @@ ACLOCAL_AMFLAGS = -I m4 ${ACLOCAL_FLAGS}
 SUBDIRS = extensions po
 
 DISTCHECK_CONFIGURE_FLAGS = --enable-extensions=all
+
+include include.mk
+
+zip-file: all
+	-rm -fR $(builddir)/_build
+	-rm -fR $(builddir)/zip-files
+	mkdir $(builddir)/_build; \
+	mkdir $(builddir)/zip-files; \
+	$(MAKE) install DESTDIR="`pwd`/_build"; \
+	for i in $(ENABLED_EXTENSIONS); do \
+		mv "`pwd`/_build/$(topextensiondir)/$${i}$(extensionbase)" "`pwd`/_build/"; \
+		cp -r "`pwd`/_build/$(datadir)/locale" "`pwd`/_build/$${i}$(extensionbase)"; \
+		if [ -f "`pwd`/_build/$(datadir)/glib-2.0/schemas/$(gschemabase).$${i}.gschema.xml" ]; then \
+			mkdir "`pwd`/_build/$${i}$(extensionbase)/schemas"; \
+			mv "`pwd`/_build/$(datadir)/glib-2.0/schemas/$(gschemabase).$${i}.gschema.xml" "`pwd`/_build/$${i}$(extensionbase)/schemas"; \
+			glib-compile-schemas "`pwd`/_build/$${i}$(extensionbase)/schemas"; \
+		fi; \
+		(cd "`pwd`/_build/$${i}$(extensionbase)"; \
+		 zip -qr "$(abs_builddir)/zip-files/$${i}$(extensionbase).shell-extension.zip" .; \
+		); \
+	done

extension.mk

@@ -1,12 +1,4 @@
-extensionurl = http://git.gnome.org/gnome-shell-extensions
-
-# Change these to modify how installation is performed
-topextensiondir = $(datadir)/gnome-shell/extensions
-extensionbase = @gnome-shell-extensions.gcampax.github.com
-
-uuid = $(EXTENSION_ID)$(extensionbase)
-
-extensiondir = $(topextensiondir)/$(uuid)
+include $(top_srcdir)/include.mk
 
 dist_extension_DATA = extension.js stylesheet.css
 nodist_extension_DATA = metadata.json $(EXTRA_EXTENSION)

extensions/alternate-tab/Makefile.am

@@ -2,7 +2,7 @@ EXTENSION_ID = alternate-tab
 
 include ../../extension.mk
 
-gschemas_in = org.gnome.shell.extensions.alternate-tab.gschema.xml.in
+gschemas_in = $(gschemabase).alternate-tab.gschema.xml.in
 
 @INTLTOOL_XML_NOMERGE_RULE@
 

extensions/auto-move-windows/Makefile.am

@@ -2,7 +2,7 @@ EXTENSION_ID = auto-move-windows
 
 include ../../extension.mk
 
-gschemas_in = org.gnome.shell.extensions.auto-move-windows.gschema.xml.in
+gschemas_in = $(gschemabase).auto-move-windows.gschema.xml.in
 
 @INTLTOOL_XML_NOMERGE_RULE@
 

extensions/dock/Makefile.am

@@ -2,7 +2,7 @@ EXTENSION_ID = dock
 
 include ../../extension.mk
 
-gschemas_in = org.gnome.shell.extensions.dock.gschema.xml.in
+gschemas_in = $(gschemabase).dock.gschema.xml.in
 
 @INTLTOOL_XML_NOMERGE_RULE@
 

extensions/native-window-placement/Makefile.am

@@ -2,7 +2,7 @@ EXTENSION_ID = native-window-placement
 
 include ../../extension.mk
 
-gschemas_in = org.gnome.shell.extensions.native-window-placement.gschema.xml.in
+gschemas_in = $(gschemabase).native-window-placement.gschema.xml.in
 
 @INTLTOOL_XML_NOMERGE_RULE@
 

extensions/user-theme/Makefile.am

@@ -2,7 +2,7 @@ EXTENSION_ID = user-theme
 
 include ../../extension.mk
 
-gschemas_in = org.gnome.shell.extensions.user-theme.gschema.xml.in
+gschemas_in = $(gschemabase).user-theme.gschema.xml.in
 
 @INTLTOOL_XML_NOMERGE_RULE@
 

include.mk

@@ -0,0 +1,11 @@
+extensionurl = http://git.gnome.org/gnome-shell-extensions
+
+# Change these to modify how installation is performed
+topextensiondir = $(datadir)/gnome-shell/extensions
+extensionbase = @gnome-shell-extensions.gcampax.github.com
+
+gschemabase = org.gnome.shell.extensions
+
+uuid = $(EXTENSION_ID)$(extensionbase)
+
+extensiondir = $(topextensiondir)/$(uuid)