MSVC complains about '*/* foobar */'. Add a space between '*' and '/'.

ICU uses a deprecated API internally and '-Wno-deprecated...' flag
has to be turned on on Android as well as on Linux.

Do not use ''-Wno-reorder' any more because it's not necessary.

BUG=575007
TEST=Once rolled, Android and Windows build go through.
R=thakis@chromium.org

Review URL: https://codereview.chromium.org/1646623006 .