Merge pull request #29 from vol0da/master

Merge #29, Re- Fixes #15

Makes `final` and `abstract` methods show up in `phpcomplete#CompleteUserClass()`'s result.
Remove duplicate test / fixtures
Make `GetCurrentInstruction()` more robust

Getting context on the first line of a function would collect back until
the first ';' into previous functions (if they are empty) classnames
and such.