Move part of bsd.mono.mk into USES=mono

Drop code for nant support which is not used at all in the ports tree
Add dependency handling on lang/mono
Pass maintainership to mono@

Mk/Uses/mono.mk

@@ -0,0 +1,33 @@
+# $FreeBSD$
+#
+# mono (c#) support
+#
+# Feature:	mono
+# Usage:	USES=mono
+#
+# MAINTAINER=	mono@FreeBSD.org
+
+.if !defined(_INCLUDE_USES_MONO_MK)
+_INCLUDE_USES_MONO_MK=	yes
+
+.if defined(objc_ARGS)
+IGNORE=	USES=objc takes no arguments
+.endif
+
+# Set the location of the .wapi directory so we write to a location we
+# can always assume to be writable.
+MONO_SHARED_DIR=	${WRKDIR}
+CONFIGURE_ENV+=		MONO_SHARED_DIR="${MONO_SHARED_DIR}"
+MAKE_ENV+=		MONO_SHARED_DIR="${MONO_SHARED_DIR}"
+BUILD_DEPENDS+=		mono:${PORTSDIR}/lang/mono
+RUN_DEPENDS+=		mono:${PORTSDIR}/lang/mono
+
+# Set the location that webaps served by XSP should use.
+XSP_DOCROOT=		${PREFIX}/www/xsp
+
+# gac utilities
+GACUTIL=${LOCALBASE}/bin/gacutil /root ${PREFIX}/lib/ /gacdir ${PREFIX}/lib
+GACUTIL_INSTALL=${GACUTIL} /i
+GACUTIL_INSTALL_PACKAGE=${GACUTIL} /i /package 1.0 /package 2.0
+
+.endif