Add the EGCS fork and succession of gcc

gcc-egcs.md

@@ -0,0 +1,7 @@
+
+The Gnu Compiler Collection (gcc) version 2.7.2 was [forked][10] in 1997 as the Experimental/Enhanced GNU Compiler System
+(EGCS). By April 1999 EGCS development supplanted gcc development, and EGCS
+became gcc 2.95 in July 1999.
+
+[10]: https://en.wikipedia.org/w/index.php?title=GNU_Compiler_Collection&oldid=1002917167#EGCS_fork
+