Apply fix from zoo:

* munch:  Backslash escape vertical bar characters inside
	grep patterns since they have special meaning for some greps.

gdb/ChangeLog

@@ -1,5 +1,7 @@
 Wed Nov 25 07:17:13 1992  Fred Fish  (fnf@cygnus.com)
 
+	* munch:  Backslash escape vertical bar characters inside
+	grep patterns since they have special meaning for some greps.
 	* parse.c (write_exp_string):  Complete rewrite to store string
 	contants as a leading explicit length, followed by the string data,
 	followed by a trailing explicit length.

gdb/munch

@@ -18,7 +18,7 @@ esac
 MUNCH_NM="${MUNCH_NM-nm} $NMOPT"
 if test "`$MUNCH_NM main.o | egrep main | egrep FUNC | egrep GLOB`" != "" ; then
     # System V Release 4 style nm
-    $MUNCH_NM $* | egrep '|__?initialize_' | egrep FUNC | \
+    $MUNCH_NM $* | egrep '\|__?initialize_' | egrep FUNC | \
       sed -e \
         's/^.*\(_initialize_[a-zA-Z0-9_]*\).*$/  {extern void \1 (); \1 ();}/'\
       | sort -u