This is particularly useful on operating systems that don't ship
Perl as part of the base system (eg. FreeBSD) while still working
just as well as it did before on Linux.
In one case (src/rpc/genprotocol.pl) the interpreter path was
missing altogether.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
The cfg.mk file rule to check for tab characters was not
applied to perl files. Much of our Perl code is full of
tabs as a result. Kill them, kill them all !
