git p4 test: make sure P4CONFIG relative path works
This adds a test for the fix in
bf1d68f (git-p4: use absolute
directory for PWD env var, 2011-12-09). It is necessary to
set PWD to an absolute path so that p4 can find files referenced
by non-absolute paths, like the value of the P4CONFIG environment
variable.
P4 does not open files directly; it builds a path by prepending
the contents of the PWD environment variable.
Signed-off-by: Pete Wyckoff <pw@padd.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>