Log Message:
Updating math/p5-Math-BaseCnv from 1.4.75 to 1.6

pkgsrc changes:
- add license definition
- adjust regex for removing instant time point in version number

Upstream changes:
    - 1.6.A6FGHKE Tue Jun 15 16:17:20:14 2010
      * bumped minor version number so they'll keep ascending (without PT
      comprehension)