K 10
svn:author
V 3
sjg
K 8
svn:date
V 27
2015-05-30T15:08:52.091140Z
K 7
svn:log
V 165
Define SRCTOP in src.sys.mk

Because src.sys.mk should only ever be found in the src tree
we can use its position (.PARSEDIR) to set SRCTOP.

Reviewed by:	bapt, imp

END