add support for MOTIFLIB

I couldn't reproduce the error shown on bento but this should probably
be added anyway.

x11/libhelp/files/patch-ab

@@ -1,15 +1,24 @@
-diff -cb ../../../libhelp-1.8.1/libhelp/Imakefile libhelp/Imakefile
-*** ../../../libhelp-1.8.1/libhelp/Imakefile	Wed Jun 28 14:59:58 1995
---- libhelp/Imakefile	Mon Oct 20 21:25:05 1997
-***************
-*** 99,104 ****
---- 99,107 ----
-  XCOMM libhelp.a
-
-  NormalLibraryTarget($(LIBHELP),$(OBJS))
-+ InstallLibrary($(LIBHELP),$(USRLIBDIR))
-+
-+ InstallNonExecFile(help.h,$(INCDIR))
-
-  XCOMM thelp (only for testing, not distributed)
-
+--- libhelp/Imakefile.orig	Wed Jun 28 05:59:58 1995
++++ libhelp/Imakefile	Sun May  2 12:41:56 1999
+@@ -56,7 +56,7 @@
+              CC = c89
+          HPDEFS = -D_HPUX_SOURCE
+          HPINCS = -I/usr/include/Motif1.2 
+-       MOTIFLIB = -L/usr/lib/Motif1.2 -lXm
++       MOTIFLIB = -L/usr/lib/Motif1.2 -lXm ${MOTIFLIB}
+ #endif
+ 
+         SYSINCS = -I/usr/local/X11R5/include $(SUNINCS) $(HPINCS)
+@@ -99,9 +99,11 @@
+ XCOMM libhelp.a
+ 
+ NormalLibraryTarget($(LIBHELP),$(OBJS))
++InstallLibrary($(LIBHELP),$(USRLIBDIR))
++InstallNonExecFile(help.h,$(INCDIR))
+ 
+ XCOMM thelp (only for testing, not distributed)
+ 
+ NormalProgramTarget(thelp,$(TESTOBJ),$(HLIB),$(THELPLIBS),$(SYSTEM_LIBS))
+ 
+-DependTarget()
++DependTarget()