pkg/49556: Don't build shells/standalone-tcsh on platforms which ship with tcsh in /bin

[venture37%geeklan.co.uk@localhost]

>Number:         49556
>Category:       pkg
>Synopsis:       Don't build shells/standalone-tcsh on platforms which ship with tcsh in /bin
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Jan 11 02:15:00 +0000 2015
>Originator:     Sevan Janiyan
>Release:        pkgsrc-current
>Organization:
>Environment:
FreeBSD 10.1-RELEASE #0 r274401: Tue Nov 11 21:02:49 UTC 2014     root%releng1.nyi.freebsd.org@localhost:/usr/obj/usr/src/sys/GENERIC  amd64
>Description:
Found out the hard way.
>How-To-Repeat:

>Fix:
cvs diff: Diffing .
Index: Makefile
===================================================================
RCS file: /cvsroot/pkgsrc/shells/standalone-tcsh/Makefile,v
retrieving revision 1.23
diff -u -r1.23 Makefile
--- Makefile    22 May 2012 08:46:53 -0000      1.23
+++ Makefile    11 Jan 2015 02:07:27 -0000
@@ -9,10 +9,10 @@
 WRKSRC=                        ${WRKDIR}/${DISTNAME}
 PATCHDIR=              ${.CURDIR}/../../shells/tcsh/patches
 
-# DragonFly already has native /bin/tcsh
 # This package is not restricted to ${LOCALBASE} and will replace system tcsh
 # Instead, see shells/tcsh which installs at ${LOCALBASE}/bin/tcsh
-NOT_FOR_PLATFORM+=     DragonFly-*-*
+# Exclude systems which ship with a copy of tcsh in /bin
+NOT_FOR_PLATFORM+=     DragonFly-*-* FreeBSD-*-* Darwin-*-*
 
 .include "../../shells/tcsh/Makefile"