ntrack api should provide runtime info about: version, author, copyright, backend

[Alexander Sack]

for now we will provide a ntrack_info banner like string; this has no guaranteed syntax and is only useful for getting information to display to humans.

[Alexander Sack (asac)]

------------------------------------------------------------
revno: 298
fixes bug(s): https://launchpad.net/bugs/749608
committer: Alexander Sack <email address hidden>
branch nick: ntrack
timestamp: Sun 2011-04-03 21:11:30 +0200
message:
  common: add human readable banner about ntrack version, author/copyright and backend to base API - lp:749608
------------------------------------------------------------

[Alexander Sack (asac)]

also updated the tests to use this:

------------------------------------------------------------
revno: 302
committer: Alexander Sack <email address hidden>
branch nick: ntrack
timestamp: Sun 2011-04-03 21:24:11 +0200
message:
  qt4[test]: print human readable ntrack info to console in mtest-qmonitor
------------------------------------------------------------
revno: 301
committer: Alexander Sack <email address hidden>
branch nick: ntrack
timestamp: Sun 2011-04-03 21:16:58 +0200
message:
  gobject[test]: print human readable ntrack info to console in mtest-gmonitor
------------------------------------------------------------
revno: 300
committer: Alexander Sack <email address hidden>
branch nick: ntrack
timestamp: Sun 2011-04-03 21:16:46 +0200
message:
  glib[test]: print human readable ntrack info to console in mtest-gsource
------------------------------------------------------------
revno: 299
committer: Alexander Sack <email address hidden>
branch nick: ntrack
timestamp: Sun 2011-04-03 21:12:43 +0200
message:
  common[test]: print human readable ntrack info to console in mtest-monitor
------------------------------------------------------------

[Alexander Sack (asac)]

Fixed: https://launchpad.net/ntrack/main/014