iAdd rudix build files

sys/rudix/COPYING

@@ -0,0 +1,8 @@
+This is a fork for the original mg3a code by Bengt Larson
+
+I was in contact with Bengt Larson until April 2017. Then, suddenly, 
+his email address was cancelled.  His repository has not been updated 
+since the 4th of April, 2017.  As of the 15th of December 2017, 
+www.bengtl.net became inaccessible and thus the original code repository i
+www.bengtl.net/files/mg3a is lost. 
+

sys/rudix/Makefile

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+include ../../Library/Unix.mk
+
+Title=		MG3a
+Name=		mg3a
+Version=	180324
+Site=		https://github.com/paaguti
+Source=		https://github.com/paaguti/$(Name)/archive/$(Version).tar.gz
+License=	GPL
+
+ReadMeFile=	$(SourceDir)/README
+
+define build_hook
+cd $(BuildDir) && $(MAKE)
+endef
+
+define install_hook
+cd $(BuildDir) && $(MAKE) PREFIX="$(DestDir)/$(Prefix)" install
+cp COPYING $(BuildDir)
+endef
+
+define test_hook
+$(BinDir)/mg -v | grep $(Version)
+endef