It's mh-lynxrs6k, not mh-lynxosrs6k.

config/.Sanitize

@@ -44,7 +44,7 @@ mh-irix4
 mh-irix5
 mh-linux
 mh-lynxos
-mh-lynxosrs6k
+mh-lynxrs6k
 mh-ncr3000
 mh-riscos
 mh-sco

config/ChangeLog

@@ -1,3 +1,25 @@
+Wed May  4 20:14:47 1994  D. V. Henkel-Wallace  (gumby@cygnus.com)
+
+	* m68k-ericsson.mt: special configuration for OSE.
+	
+	* mh-lynxrs6k: set SHELL to /bin/bash
+
+Tue Apr 12 12:38:17 1994  Ian Lance Taylor  (ian@tweedledumb.cygnus.com)
+
+	* mh-irix4 (CC): Change -XNh1500 to -XNh2000.
+
+Sat Dec 25 20:03:45 1993  Jeffrey A. Law  (law@snake.cs.utah.edu)
+
+	* mt-hppa: Delete.
+
+Tue Nov 16 22:54:39 1993  Jim Kingdon  (kingdon@lioth.cygnus.com)
+
+	* mh-a68bsd: Define CC to gcc.
+
+Mon Nov 15 16:56:51 1993  Jim Kingdon  (kingdon@lioth.cygnus.com)
+
+	* mh-linux: Don't put -static in LDFLAGS.  Add comments.
+
 Mon Nov 15 13:37:58 1993  david d `zoo' zuhn  (zoo@cirdan.cygnus.com)
 
 	* mh-sysv4 (AR_FLAGS): change from cq to cr