[gimp] icons: add the generated Symbolic-Inverted icons to DISTCLEANFILES

[Michael Natterer <mitch src gnome org>]

commit 9868e28df91b5bd8c7e03fcd03e8de971a62c447
Author: Michael Natterer <mitch gimp org>
Date:   Tue Dec 22 13:33:51 2015 +0100

    icons: add the generated Symbolic-Inverted icons to DISTCLEANFILES

 icons/Symbolic-Inverted/Makefile.am |   10 ++++++++--
 1 files changed, 8 insertions(+), 2 deletions(-)
---
diff --git a/icons/Symbolic-Inverted/Makefile.am b/icons/Symbolic-Inverted/Makefile.am
index 77918cf..e2e013f 100644
--- a/icons/Symbolic-Inverted/Makefile.am
+++ b/icons/Symbolic-Inverted/Makefile.am
@@ -30,8 +30,7 @@ include $(top_srcdir)/icons/Symbolic/icon-list.mk
          </node> \
        </gegl>" -o $@
 
-EXTRA_DIST = \
-       $(icons_DATA)           \
+all_icons = \
        $(icons12_DATA)         \
        $(icons16_DATA)         \
        $(icons18_DATA)         \
@@ -41,3 +40,10 @@ EXTRA_DIST = \
        $(icons32_DATA)         \
        $(icons48_DATA)         \
        $(icons64_DATA)
+
+EXTRA_DIST = \
+       $(icons_DATA)           \
+       $(all_icons)
+
+DISTCLEANFILES = \
+       $(all_icons)