K 10
svn:author
V 4
ngie
K 8
svn:date
V 27
2017-08-27T16:15:37.896889Z
K 7
svn:log
V 357
Respect MK_TCSH with build-tools and native-xtools

This helps reduce the WORLDTMP footprint slightly.

Based on a patch I submitted 5 years ago to GNATS.

PR:		174051
MFC after:	2 weeks
Relnotes:	yes (anyone who cross-builds with MK_TCSH=yes will run into
		     build failures if the host doesn't have tcsh(1))
Reminded by:	Fabian Keil <fk@fabiankeil.de>

END