CVS commit: src/usr.bin/make

[David Laight <dsl%netbsd.org@localhost>]

Module Name:    src
Committed By:   dsl
Date:           Sat Dec 20 17:14:04 UTC 2008

Modified Files:
        src/usr.bin/make: var.c

Log Message:
Do not allow Var_Set() or Var_Append() to set the empty variable (which will
now forever remain undefined).
Rework/simplify code to avoid UNCONST().


To generate a diff of this commit:
cvs rdiff -r1.138 -r1.139 src/usr.bin/make/var.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.