fix error with "self" references in top level ns

[daniel-sc]

This fixes an error when a class with top level namespace uses self:: to reference a class constant.

The error manifests for example as:

PHP Parse error:  syntax error, unexpected '\' (T_NS_SEPARATOR), expecting identifier (T_STRING)

[TheCelavi]

This should go to your global gitignore.

See, per example, this: https://gist.github.com/subfuzion/db7f57fff2fb6998a16c but you can find a loot of resources on this topic.

Point here is - rules for ignoring IDE specific files (or system specific files) should not be part of .gitignore files, as we could get into a really large .gitignore files.

[TheCelavi]

Please revert .gitignore file.

[scrutinizer-notifier]

The inspection completed: No new issues

[daniel-sc]

Hi @TheCelavi,
I reverted the .gitignore, but for unclear reasons the AppVeyor build fails no (was working before) - could you maybe restart the build?

[lisachenko]

AppVeyor is buggy and crappy, so we could ignore this fail.

[lisachenko]

I think it would be nice to target 2.x branch, because master is not ready yet, so small patch could be released from 2.x

[daniel-sc]

@lisachenko 2.x and a new release would be perfect!
Can you merge, or do you need any thing else?