K 10
svn:author
V 11
arichardson
K 8
svn:date
V 27
2018-08-22T11:56:51.666112Z
K 7
svn:log
V 268
Use unifdef -x1 instead of ignoring the shell exit code

This way the target fails if unifdef doesn't exist or doesn't modify the
file instead of just generating an empty .c file.
I found this while building without inherited $PATH (D16815)

Approved By:	jhb (mentor)

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