Merge pull request #55 from dterweij/6.1.x

prepare 6.1.x based on 6.1.13
Merge pull request #56 from dterweij/6.1.x

[GUI] Project issue #1079. Add new PHP Core.
Merge pull request #57 from dterweij/6.1.x

[GUI] Project issue #1079. Add new PHP Core.
Php 5.4 compatibility fixes

Behaviour of eval() changed since php 5.2, changed arg_getting_strings to inline.
Fixed E_STRICT fails because of inconsistent function declarations.
Merge pull request #58 from semirke/6.1.x

Php 5.4 compatibility fixes