Add a .bep for xproto, required by libXpm

Not sure about the licence, COPYING contains several ones.

dev-util/xproto/xproto-7.0.23-git.bep

@@ -0,0 +1,27 @@
+DESCRIPTION="xproto" 
+HOMEPAGE="http://cgit.freedesktop.org/xorg/proto/xproto/" 
+COPYRIGHT="1991, Oracle and/or its affiliates. All rights reserved.
+1985, 1987, 1988, 1990, 1991, 1993-1996, 1998  The Open Group
+1987 by Digital Equipment Corporation, Maynard, Massachusetts.
+1987 by Apollo Computer Inc., Chelmsford, Massachusetts.
+1989 by Hewlett-Packard Company.
+1999  The XFree86 Project Inc."
+LICENSE="MIT (no promotion)"
+
+SRC_URI="git://anongit.freedesktop.org/xorg/proto/xproto"
+#CHECKSUM_MD5=""
+REVISION="1"
+STATUS_HAIKU="untested"
+DEPEND=""
+BUILD {
+	cd xprotos-7.0.23-git
+	./autogen.sh -V
+	./configure --prefix=`finddir B_COMMON_DIRECTORY` \
+		--datadir=`finddir B_COMMON_LIB_DIRECTORY`
+	make
+}
+
+INSTALL {
+	cd xorg-macros-7.0.23-git
+	make install
+}