[RFC] man page generation dependency on perl

[Michal H. <ms...@gm...>]

Hi,

currently, man page is generated during normal make process (by
doc/tools/docbook2man.pl script) which makes our make process dependant
on perl. Moreover perl is not detected during configure which can
silently lead to an empty man page in the end (if perl is not
installed).

I suggest attached patch which forces man page generation before
distribution tarball is created. This solution is easier than perl
detection and I find it better also from
keep-as-few-dependency-as-possible POV.  
-- 
Michal Hocko