Log Message:
Update lang/algol68g to algol68g-2.8.2.
Patch provided by Olaf 'Rhialto' Seibert via PR pkg/50371.

Changes:
Version 2.8.2, October 2015
* Several bug fixes.
* Cleaner interface for command line arguments
  through routines a68gargc and a68gargv.

Version 2.8.1, January 2015
* Update source code for recent versions of gcc, autoconf, automake and TeX.
* Documentation updates.