Run 'perl -c -w' on perl scripts during make

[massar]

Currently with the replacement variables/templates this is trickier, but we can do this on installed base.

When the replacement stuff is gone, we should run 'perl -c -w' on all perl scripts to verify them for errors/issues.

in the source dir identify perl scripts:
$ echo ls *pl | sed 's/.pl//g'

$ LIST=${paste}
$ for i in ${LIST}; do perl -c -w $i; done
approve syntax OK
chpw syntax OK
dbck-password syntax OK
findmember syntax OK
fsck-mlkeys syntax OK
fsck-pgpkeys syntax OK
gpgtest syntax OK
mail-handler syntax OK
new-member syntax OK
notify-idle syntax OK
notify-stuck syntax OK
notify-unvetted syntax OK
report-unvetted syntax OK
state-mon syntax OK