Log message:
Pullup ticket #6323 - requested by he
textproc/groonga: PowerPC build fix

Revisions pulled up:
- textproc/groonga/hacks.mk                                     1.5

---
   Module Name:	pkgsrc
   Committed By:	he
   Date:		Sun Sep 13 13:16:10 UTC 2020

   Added Files:
   	pkgsrc/textproc/groonga: hacks.mk

   Log message:
   Add use of devel/libatomic on powerpc ports; fixes the build since
   this platform doesn't have native 8-byte atomics.