[PATCH libSM] doc: clean the grohtml png files so distcheck succeeds

[Gaetan Nadon]

Left over png files causes distcheck to fail.

Signed-off-by: Gaetan Nadon <memsize at videotron.ca>
---
 doc/Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/doc/Makefile.am b/doc/Makefile.am
index b1fccc0..1856b77 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -31,7 +31,7 @@ if BUILD_DOCS
 doc_DATA = SMlib.txt SMlib.ps SMlib.html xsmp.txt xsmp.ps xsmp.html
 
 CLEANFILES = $(doc_DATA)
-MOSTLYCLEANFILES = index.*
+MOSTLYCLEANFILES = index.* grohtml-*.png
 
 # Pass version string as a troff string for substitution
 GROFF_DEFS = -dxV="$(PACKAGE_STRING)"
-- 
1.6.0.4