This patch makes the build use its own Xcomposite.h over rather than an
older Xcomposite.h that might already be installed in the staging dir.

--- libXcomposite-X11R7.0-0.2.2.2/src/Makefile.am.orig	2006-03-12 20:10:17.000000000 +0100
+++ libXcomposite-X11R7.0-0.2.2.2/src/Makefile.am	2006-03-12 20:10:35.000000000 +0100
@@ -21,7 +21,7 @@
 #  TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 #  PERFORMANCE OF THIS SOFTWARE.
 
-AM_CFLAGS = $(XCOMPOSITE_CFLAGS) $(XCOMPOSITE_CFLAGS) $(X_CFLAGS) -I$(top_srcdir)/include
+AM_CFLAGS = -I$(top_srcdir)/include $(XCOMPOSITE_CFLAGS) $(XCOMPOSITE_CFLAGS) $(X_CFLAGS)
 
 lib_LTLIBRARIES = libXcomposite.la