[gnome-shell-extensions] Install COPYING in the extension zip files

[Giovanni Campagna <gcampagna src gnome org>]

commit 9d00455d8fd6fab557428561b8125ba0d63ff924
Author: Giovanni Campagna <gcampagna src gnome org>
Date:   Wed Jan 11 16:36:53 2012 +0100

    Install COPYING in the extension zip files
    
    This way it is clear what license covers these extensions, and to
    what extent it is possible to reuse the code.
    Also, fixed the rule to avoid calling `pwd` a bunch of times.

 Makefile.am |   17 +++++++++--------
 1 files changed, 9 insertions(+), 8 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 28c40c3..fb9fcca 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -13,16 +13,17 @@ zip-file: all
 	-rm -fR $(builddir)/zip-files
 	mkdir $(builddir)/_build; \
 	mkdir $(builddir)/zip-files; \
-	$(MAKE) install DESTDIR="`pwd`/_build"; \
+	$(MAKE) install DESTDIR="$(abs_builddir)/_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/$${i}$(extensionbase)/schemas"; \
+		mv "$(builddir)/_build$(topextensiondir)/$${i}$(extensionbase)" "$(builddir)/_build/"; \
+		cp -r "$(builddir)/_build$(datadir)/locale" "$(builddir)/_build/$${i}$(extensionbase)"; \
+		cp "$(srcdir)/COPYING" -t "$(builddir)/_build/$${i}$(extensionbase)"; \
+		if [ -f "$(builddir)/_build$(datadir)/glib-2.0/schemas/$(gschemabase).$${i}.gschema.xml" ]; then \
+			mkdir "$(builddir)/_build/$${i}$(extensionbase)/schemas"; \
+			mv "$(builddir)/_build$(datadir)/glib-2.0/schemas/$(gschemabase).$${i}.gschema.xml" "$(builddir)/_build/$${i}$(extensionbase)/schemas"; \
+			glib-compile-schemas "$(builddir)/_build/$${i}$(extensionbase)/schemas"; \
 		fi; \
-		(cd "`pwd`/_build/$${i}$(extensionbase)"; \
+		(cd "$(builddir)/_build/$${i}$(extensionbase)"; \
 		 zip -qr "$(abs_builddir)/zip-files/$${i}$(extensionbase).shell-extension.zip" .; \
 		); \
 	done