Rename files so they follow a naming convention

src/Makefile.am

@@ -1,6 +1,7 @@
 res_dir = $(srcdir)/resources
 res_src = $(res_dir)/gnome-gitlab.gresource.xml
 resource_files = $(shell $(GLIB_COMPILE_RESOURCES) --generate-dependencies --sourcedir=$(res_dir) $(res_src))
+
 AM_CPPFLAGS = \
 	-DGETTEXT_PACKAGE=\""$(GETTEXT_PACKAGE)"\" \
 	-DGNOMELOCALEDIR=\""$(localedir)"\"
@@ -12,15 +13,15 @@ AM_VALAFLAGS = \
 
 bin_PROGRAMS = gnome-gitlab
 BUILT_SOURCES = \
-	gl-resources.c
+	gg-resources.c
 
-gl-resources.c: $(res_src) $(resource_files)
+gg-resources.c: $(res_src) $(resource_files)
 	$(AM_V_GEN) $(GLIB_COMPILE_RESOURCES) --target=$@ --sourcedir=$(srcdir)/resources --generate-source $<
 
 VALA_SOURCES = \
-	application.vala \
-	window.vala \
-	main.vala
+	gg-application.vala \
+	gg-window.vala \
+	gg-main.vala
 
 gnome_gitlab_SOURCES = \
 	$(BUILT_SOURCES) \