FEAT: remainder action support (for integer! and char!).

FEAT: accept eacaped value (%xx) in file name.
FEAT: uncomment tests for remainder.
FIX: Can't handle escaped format (%xx) in file name.

TESTS: Add a test for file!
FEAT: Add modulo op! (//) and modulo mezzanine support.

FIX:  Get rid of internal remainder op! '///
FEAT: Add absolute action! support.
FEAT: OP! can bind with function!
Merge pull request #771 from qtxie/remainder

FEAT: remainder action support (for integer! and char!).