[mutter] build: Clean up .pc files

[Florian Müllner <fmuellner src gnome org>]

commit 827db6f7c749f053d7a8efba6e556652b631d4ff
Author: Florian Müllner <fmuellner gnome org>
Date:   Wed Feb 15 23:37:21 2017 +0100

    build: Clean up .pc files

 cogl/cogl-gles2/Makefile.am |    4 ++++
 src/Makefile.am             |    3 ++-
 2 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/cogl/cogl-gles2/Makefile.am b/cogl/cogl-gles2/Makefile.am
index f7adf43..294228d 100644
--- a/cogl/cogl-gles2/Makefile.am
+++ b/cogl/cogl-gles2/Makefile.am
@@ -2,6 +2,8 @@
 
 NULL =
 
+DISTCLEANFILES =
+
 mutterlibdir = $(libdir)/mutter
 mutterlib_LTLIBRARIES = libmutter-cogl-gles2-@LIBMUTTER_API_VERSION@.la
 
@@ -29,3 +31,5 @@ pc_files = mutter-cogl-gles2-$(LIBMUTTER_API_VERSION).pc
 
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = $(pc_files)
+
+DISTCLEANFILES += $(pc_files)
diff --git a/src/Makefile.am b/src/Makefile.am
index 6997151..405108e 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -532,7 +532,8 @@ CLEANFILES =                                        \
        $(gir_DATA)
 
 DISTCLEANFILES =                               \
-       $(libmutterinclude_built_headers)
+       $(libmutterinclude_built_headers)       \
+       $(pkgconfig_DATA)
 
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = libmutter-$(LIBMUTTER_API_VERSION).pc