Bug#786421: warn against usage of spaces, i.e. 'Type = notify' in systemd unit files

[Patrick Schleizer <adrelanos@riseup.net>]

Package: lintian
Severity: wishlist

systemd man pages always uses the syntax without spaces, for example
'Type=notify' and so forth.

A systemd contributor on #systemd irc.freenode.net also recommended
against it.

<zdzichu> adrelanos: please do not use spaces
<zdzichu> adrelanos: there was recently a problem with spaces in ExecStart=

There is an issue with deb-systemd-helper when using spaces. [1]

Therefore I suggest to add a lintian warning when spaces of that type
are found in systemd unit files.

Cheers,
Patrick

[1] deb-systemd-helper fails to enable systemd units when using
'WantedBy = ' with spaces [2]
[2] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=786418