Fix indentation of Makefile.am

--- a/Makefile.am	2010-08-22 16:11:19.872577459 -0500
+++ b/Makefile.am	2010-08-22 16:11:55.289599110 -0500
@@ -17,11 +17,11 @@
 
 if GCONF_SCHEMAS_INSTALL
 install-data-local:
-        if test -z "$(DESTDIR)" ; then \
-          for p in $(schemas_DATA) ; do \
-            GCONF_CONFIG_SOURCE=$(GCONF_SCHEMA_CONFIG_SOURCE) $(GCONFTOOL) --makefile-install-rule $(srcdir)/$$p ; \
-          done \
-        fi
+	if test -z "$(DESTDIR)" ; then \
+		for p in $(schemas_DATA) ; do \
+			GCONF_CONFIG_SOURCE=$(GCONF_SCHEMA_CONFIG_SOURCE) $(GCONFTOOL) --makefile-install-rule $(srcdir)/$$p ; \
+		done \
+	fi
 else
 install-data-local:
 endif