Exploits that support findsock should explicitly state compatibility

This will require the changes to lib/msf/core/exploit.rb on line 43, so that it now reads without the 'find' directive:

# Support reverse, bind, and noconn connection types
# for all exploits unless expressly disabled.
'ConnectionType' => 'reverse bind noconn none tunnel',

..and the addition of this directive to a great many exploits, as so:

'Space'    => 500,
'BadChars' => "\x00",
'Compat'   => 
  {
    'ConnectionType' => '+find',
  },

(In [5128]) See #17

The first step is done, now we need to update the exploits as needed. I haven't tested too many of these with the find payloads.