Expand the test suite to include (The failures found) by syntax checking php-src's phpt tests

[TysonAndre]

php-ast's test suites are not comprehensive, and only cover major changes to the extension.

[TysonAndre]

Expanded this to errors found syntax checking phan and phan's tests

[TysonAndre]

A lot of this has been finished.

#11 and #10 are edge cases.

[TysonAndre]

Finished this. Noticed that goto, labels, doc comment on declares, etc. weren't tested, as well as some flags