package: add libmbus library

libmbus is an open source M-bus (Meter-Bus) library.

The Meter-Bus is a standard for reading out meter data from electricity
meters, heat meters, gas meters, etc.

[Peter: minor whitespace fixes]
Signed-off-by: Sagaert Johan <sagaert.johan@skynet.be>
Reviewed-by: Luca Ceresoli<luca@lucaceresoli.net>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/Config.in

@@ -343,6 +343,7 @@ source "package/libmicrohttpd/Config.in"
 source "package/neon/Config.in"
 source "package/libmnl/Config.in"
 source "package/libmodbus/Config.in"
+source "package/libmbus/Config.in"
 source "package/libnl/Config.in"
 source "package/libpcap/Config.in"
 source "package/libosip2/Config.in"

package/libmbus/Config.in

@@ -0,0 +1,8 @@
+config BR2_PACKAGE_LIBMBUS
+	bool "libmbus"
+	help
+	  libmbus is a library for communicating with energy metering devices.
+	  It supports TCP and RS232 M-bus gateways.
+	  (M-bus standard: http://www.m-bus.com/)
+
+	  http://www.freescada.com/libmbus

package/libmbus/libmbus.mk

@@ -0,0 +1,15 @@
+#############################################################
+#
+# libmbus
+#
+#############################################################
+
+LIBMBUS_VERSION = 0.6.1
+LIBMBUS_SITE = http://www.freescada.com/public-dist/
+LIBMBUS_INSTALL_STAGING = YES
+
+# Without this the build yields an error:
+#   cannot find input file: `test/Makefile.in'
+LIBMBUS_AUTORECONF = YES
+
+$(eval $(call AUTOTARGETS))