completing for release

examples/gfcc/compiler/README

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+C compiler written in GF.
+
+Usage: 
+
+  ./gfcc Foo.c
+
+produces the Jasmin file Foo.j
+
+Compile the compiler:
+
+  make
+
+If you change the file ImperC.gf, you have to have BNFC 2.2, Happy,
+and Alex, and use
+
+  make compiler 
+
+See FILES to find out what files and tools you need.
+
+(AR 23/9/2004 -- 8/11)
+