8194154: System property user.dir should not be changed
Summary: Cached user.dir so getCanonicalPath uses the cached value.
Reviewed-by: alanb, bpb, rriggs
^build/
^dist/
^.idea/
nbproject/private/
^webrev
^.src-rev$
^.jib/
\.DS_Store
\.metadata/
\.recommenders/
test/nashorn/script/external
test/nashorn/lib
NashornProfile.txt
.*/JTreport/.*
.*/JTwork/.*