Added some simple Net_SSH2 tests

Placed helper at top again in my test

Removed a whitespace
PHP_Compat is required when the PHP version below 4.3.3 (not above or equal).
Merge pull request #256 from bantu/fix-php-compat-description

PHP_Compat is required when the PHP version below 4.3.3 (not above or eq...

* bantu/fix-php-compat-description:
  PHP_Compat is required when the PHP version below 4.3.3 (not above or equal).
SSH2: ignore exit_status channel requests

Fixes #258
Merge pull request #264 from terrafrost/exit-status

SSH2: ignore exit_status channel requests

* terrafrost/exit-status:
  SSH2: ignore exit_status channel requests
SSH2: add ssh-agent support
CS: Each file MUST end with exactly one newline character
Merge pull request #266 from bantu/cs-endfile-newline

CS: Each file MUST end with exactly one newline character

* bantu/cs-endfile-newline:
  CS: Each file MUST end with exactly one newline character
Add Travis CI PHP 5.6 environment.
Merge pull request #268 from bantu/travis/php-5.6

Add Travis CI PHP 5.6 environment.

* bantu/travis/php-5.6:
  Add Travis CI PHP 5.6 environment.
Add build directory.
Use exclude instead of changing severity.
Update PHP_CodeSniffer from 1.4.7 to 1.5.2. This fixes a rule inheritance bug.
Apply coding guidelines (with exceptions) to the tests directory.
Merge pull request #269 from bantu/code-sniffer-tests

Apply Code Sniffer to tests folder

* bantu/code-sniffer-tests:
  Apply coding guidelines (with exceptions) to the tests directory.
  Update PHP_CodeSniffer from 1.4.7 to 1.5.2. This fixes a rule inheritance bug.
  Use exclude instead of changing severity.
  Add build directory.
SSH_Agent: misc updates
SSH_Agent: phpdoc updates
Merge pull request #265 from terrafrost/ssh-agent

SSH2: add ssh-agent support

* terrafrost/ssh-agent:
  SSH_Agent: phpdoc updates
  SSH_Agent: misc updates
  SSH2: add ssh-agent support
Add newline at EOF to phpseclib/System/SSH_Agent.php.
SSH_Agent: a few changes per bantu