revert: convert resolve_ref() to read_ref_full()
revert: convert resolve_ref() to read_ref_full()

This is the follow up of c689332 (Convert many resolve_ref() calls to
read_ref*() and ref_exists() - 2011-11-13). See the said commit for
rationale.

Signed-off-by: Nguyễn Thái Ngọc Duy <024f400cd820cb2ddbe54c7fecfd01e45f30bb96@gmail.com>
Signed-off-by: Junio C Hamano <a6723cc3f76163bf7adb636a73ac3b0ceb3e6b9b@pobox.com>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git