PHPC-1076: Expose result document for failed commands via CommandFailedEvent

[jmikola]

https://jira.mongodb.org/browse/PHPC-1076

Supersedes #818. This includes the bump to libmongoc 1.10-dev and test suite changes for connection strings and skip functions.

[kvwalker]

LGTM other than a change for the commandFailed test

[kvwalker]

This test fails because var_dump($event->getReply()) returns an object that includes operationTime, $clusterTime, and signature.

This can be fixed by adding

["operationTime"]=>
  object(MongoDB\BSON\Timestamp)#%d (2) {
    ["increment"]=>
    string(1) "1"
    ["timestamp"]=>
    string(10) "%d"
  }
  ["$clusterTime"]=>
  object(stdClass)#%d (2) {
    ["clusterTime"]=>
    object(MongoDB\BSON\Timestamp)#%d (2) {
      ["increment"]=>
      string(1) "1"
      ["timestamp"]=>
      string(10) "%d"
    }
    ["signature"]=>
    object(stdClass)#%d (2) {
      ["hash"]=>
      object(MongoDB\BSON\Binary)#%d (2) {
        ["data"]=>
        string(20) "%s"
        ["type"]=>
        int(0)
      }
      ["keyId"]=>
      int(0)
    }

[jmikola]

Thanks for catching that. It didn't come up with overview.php because I was already using %A there for 3.2 compatibility.

[jmikola]

Note: Changes in #841 should address Windows builds.

[derickr]

It looks OK, but I'd prefer you would rebase this on master after merging #841, to make sure the Windows build is actually addressed.