FEAT: add POSITIVE? NEGATIVE? MIN/MAX native! support.

FEAT: add POWER action! support.
FEAT: add ODD?/EVEN? support for char!
NOTE: 1. MIN/MAX not support word!
      2. POWER only for integer!
Merge pull request #775 from qtxie/native-2

FEAT: add POSITIVE? NEGATIVE? MIN/MAX native! support.