Log message:
Pullup ticket #6481 - requested by nia
graphics/glew: packaging fix

Revisions pulled up:
- graphics/glew/Makefile                                        1.28

---
   Module Name:	pkgsrc
   Committed By:	nia
   Date:		Sun Jul  4 08:08:04 UTC 2021

   Modified Files:
   	pkgsrc/graphics/glew: Makefile

   Log message:
   glew: Fix .pc file generation, bump PKGREVISION.

   Previously the prefix was not set and defaulted to /usr, which is
   Usually Wrong.