Issue #7716: Under Solaris, don't assume existence of /usr/xpg4/bin/grep in
the configure script but use $GREP instead.  Patch by Fabian Groffen.
diff --git a/Misc/ACKS b/Misc/ACKS
index dccb779..1cf2cb1 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -321,6 +321,7 @@
 Hans de Graaff
 Eddy De Greef
 Duncan Grisby
+Fabian Groffen
 Eric Groo
 Dag Gruneau
 Michael Guravage