gtk+: enhanced to be able to build without jasper (jpeg200)

gtk+/gtk+/gtk+.conf

@@ -2,7 +2,7 @@
 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 #
 # Filename: package/.../gtk+/gtk+.conf
-# Copyright (C) 2008 The OpenSDE Project
+# Copyright (C) 2008 - 2009 The OpenSDE Project
 # Copyright (C) 2004 - 2006 The T2 SDE Project
 # Copyright (C) 1998 - 2004 Clifford Wolf
 #
@@ -18,9 +18,10 @@
 # --enable-fbmanager  enable framebuffer manager support (GtkFB)
 var_append confopt ' ' '--with-xinput=yes'
 
-for x in libtiff libjpeg; do
+for x in libtiff libjpeg jasper:libjasper; do
+	y="${x#*:}" x="${x%:*}"
 	if ! pkginstalled $x; then
-		var_append extraconfopt ' ' "--without-$x"
+		var_append extraconfopt ' ' "--without-$y"
 	fi
 done