[TYPO3-extbase-kickstarter] Compatibility with different fluid versions

[Sebastian Michaelsen]

A big problem of the extbase_kickstarter is that it has to support 
different versions of fluid (and extbase).

That means every breaking change in fluid (e.g. renamed methods) 
requires the kickstarter to handle the old and the new version of fluid.

For that reason I introduced Tx_ExtbaseKickstarter_Utility_Compatibility 
today.

Please have a look at 
Tx_ExtbaseKickstarter_Service_CodeGenerator->buildRenderingContext() for 
a usage example.

If you (as a extbase_kickstarter developer / patch provider) fix a bug 
that results from a fluid or extbase update, please mind to support both 
the old and the new version instead of just replacing the call.

It's quite simple and helps to prevent a lot of problems.

Thanks and keep going!

Sebastian M.


P.S.: I'm looking for some feedback for the compatibility changes I made 
today. Does it work everywhere?