[recipes] Make sure to remove generated sources sometimes

[Matthias Clasen <matthiasc src gnome org>]

commit 8f43bcee48d869f3cf0c83784ac7d2637265e5ec
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Dec 16 12:55:35 2016 -0500

    Make sure to remove generated sources sometimes
    
    Otherwise, they are never regenerated and cause problems.

 src/Makefile.am |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)
---
diff --git a/src/Makefile.am b/src/Makefile.am
index d3aea58..081395b 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -113,6 +113,14 @@ BUILT_SOURCES = \
        gr-shell-search-provider-dbus.h \
        gr-shell-search-provider-dbus.c
 
+MAINTAINERCLEANFILES = \
+       resources-ui.c          \
+       resources-images.c      \
+       types.h                 \
+       types.c                 \
+       gr-shell-search-provider-dbus.h \
+       gr-shell-search-provider-dbus.c
+
 resource_ui_files = $(shell $(GLIB_COMPILE_RESOURCES) --sourcedir=$(srcdir) --generate-dependencies 
$(srcdir)/recipes-ui.gresource.xml)
 
 resources-ui.c: recipes-ui.gresource.xml $(resource_ui_files)