libtmux hack fix to use it in OpenBSD's tmux (libtmux/common.py)

common.py

" Starting at line 401
403     " OpenBSD doesn't use -V, so make sure it is > 5.8 "
1     import platfor9
2     os = platform.system()
3     rel = platform.release()
4 
5     if not version:
6         proc = tmux_cmd('-V')
7         " OpenBSD hack "
8         if os != 'OpenBSD' and float(rel) <= 5.9:·
9             if proc.stderr:
10                 if proc.stderr[0] == 'tmux: unknown option -- V':
11                     raise exc.LibTmuxException(
12                         'libtmux supports tmux 1.8 and greater. This system'
13                         ' is running tmux 1.3 or earlier.')
14                 raise exc.LibTmuxException(proc.stderr)
15 
16             version = proc.stdout[0].split('tmux ')[1]
17         else:
18             version = '1.8'
19