typo in mkgf shell script (path program)

[Oscar M. Nierstrasz]

Awk is called improperly in mkgf:

20c20
< awk -ea.awk ef > gf
---
> awk -f ea.awk ef > gf
-- 

# UUCP:	{ allegra cornell decvax decwrl floyd ihnp4 linus
# 	  sask ubc-vision utzoo uw-beaver watmath } !utcsrgv!oscar