Fix hotcopy code for pre-1.4 FSFS repositories. * subversion/libsvn_fs_fs/hotcopy.c (hotcopy_update_current): Bump the revision number *before* trying to read the new rev(s) from the target repo. (hotcopy_body): Prevent multiple, expensive max ID scans. * subversion/tests/cmdline/svnadmin_tests.py (fsfs_hotcopy_old_non_empty): Should pass now. Found by: Evgeny Kotkov <evgeny.kotkov{_AT_}visualsvn.com>