Only install .png files to pixmaps/ and skip .ico.

diff -up incollector-1.2/Makefile.am.pixmaps incollector-1.2/Makefile.am
--- Makefile.am.pixmaps	2009-01-11 19:46:51.000000000 +0200
+++ Makefile.am	2009-12-03 13:03:01.000000000 +0200
@@ -45,7 +45,7 @@ install-data-local:
 	@$(NORMAL_INSTALL)
 	if test -d $(srcdir)/pixmaps; then \
 	  $(mkinstalldirs) $(DESTDIR)$(datadir)/pixmaps; \
-	  for pixmap in $(srcdir)/pixmaps/*; do \
+	  for pixmap in $(srcdir)/pixmaps/*.png; do \
 	    if test -f $$pixmap; then \
 	      $(INSTALL_DATA) $$pixmap $(DESTDIR)$(datadir)/pixmaps/; \
 	    fi \
@@ -55,7 +55,7 @@ install-data-local:
 dist-hook:
 	if test -d pixmaps; then \
 	  mkdir $(distdir)/pixmaps; \
-	  for pixmap in pixmaps/*; do \
+	  for pixmap in pixmaps/*.png; do \
 	    if test -f $$pixmap; then \
 	      cp -p $$pixmap $(distdir)/pixmaps; \
 	    fi \
diff -up incollector-1.2/Makefile.in.pixmaps incollector-1.2/Makefile.in
--- Makefile.in.pixmaps	2009-12-03 13:04:34.000000000 +0200
+++ Makefile.in	2009-12-03 13:04:46.000000000 +0200
@@ -672,7 +672,7 @@ install-data-local:
 	@$(NORMAL_INSTALL)
 	if test -d $(srcdir)/pixmaps; then \
 	  $(mkinstalldirs) $(DESTDIR)$(datadir)/pixmaps; \
-	  for pixmap in $(srcdir)/pixmaps/*; do \
+	  for pixmap in $(srcdir)/pixmaps/*.png; do \
 	    if test -f $$pixmap; then \
 	      $(INSTALL_DATA) $$pixmap $(DESTDIR)$(datadir)/pixmaps/; \
 	    fi \
@@ -682,7 +682,7 @@ install-data-local:
 dist-hook:
 	if test -d pixmaps; then \
 	  mkdir $(distdir)/pixmaps; \
-	  for pixmap in pixmaps/*; do \
+	  for pixmap in pixmaps/*.png; do \
 	    if test -f $$pixmap; then \
 	      cp -p $$pixmap $(distdir)/pixmaps; \
 	    fi \