[gtk+] Use GREP, not grep

[Matthias Clasen <matthiasc src gnome org>]

commit 0ef0b9c68bfd2dfd76ab6499976ea8d849c20066
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Jun 26 22:35:56 2010 -0400

    Use GREP, not grep
    
    As reported in bug 621927

 gtk/Makefile.am |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gtk/Makefile.am b/gtk/Makefile.am
index 5027209..05bf201 100644
--- a/gtk/Makefile.am
+++ b/gtk/Makefile.am
@@ -815,9 +815,9 @@ gtktypebuiltins.c: @REBUILD@ $(gtk_public_h_sources) gtktypebuiltins.c.template
 gtktypefuncs.c: @REBUILD@ $(top_srcdir)/gtk/*.h $(top_srcdir)/gdk/*.h Makefile
 	echo '#include <gtk/gtk.h>' > xgen-gtfsrc.c && \
 	  ${CPP} $(DEFS) $(INCLUDES) -DGTK_ENABLE_BROKEN $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) xgen-gtfsrc.c | \
-	  grep -o '\bg[td]k_[a-zA-Z0-9_]*_get_type\b' | \
+	  $(GREP) -o '\bg[td]k_[a-zA-Z0-9_]*_get_type\b' | \
 	  sort | uniq | \
-	  sed '{ s/^/*tp++ = /; s/$$/();/; }' > xgen-gtf \
+	  $(SED) '{ s/^/*tp++ = /; s/$$/();/; }' > xgen-gtf \
 	&& cp xgen-gtf $@ && rm -f xgen-gtf
 gtktestutils.c: gtktypefuncs.c