Review Frederik
===============
[done] ezcTranslation::parameter_callback - what is the ctype_upper if good for?
[done] ezcTranslation::getString - rename to getTranslation?

[done] ezcTranslationBackend - misses an example
[bogus] ezcTranslationBackend - What is the exact relation between this and ezcTranslationBackend.
[done] ezcTranslationBackend::setOptions - What should happen when a erroneous setting is set? Ignore / throw?

[done] ezcTranslationContextRead - See above
[done,different] ezcTranslationContextRead::haveMore - This method is improperly named as i doesn't just check but it also advances.
                                      I propose call it getNextContext() and making it return null if there are no more.
[done,different] ezcTranslationContextRead::readContext - Along the same lines as the above, this should be named getCurrentContext instead.
[done,different] ezcTranslationContextRead::readContext - format of the returned data

[done] ezcTranslationFillinFilter - Shouldn't it be ezcTranslationFillInFilter, or ezcTranslationReplaceMissing ezcTranslationComplementEmptyFilter

[done] ezcTranslationCacheBackend - is missing an example
[done] ezcTranslationCacheBackend::setOptions FIXME here.
[done] ezcTranslationCacheBackend::__construct and $cache, what is the correct type for this? I used ezcCacheStorageFileArray (this is what you used in your examples)

[done] ezcTranslationTsBackend - tsFilenameFormat, what possible formats are available?
[done] ezcTranslationTsBackend - missing example
[done] ezcTranslationTsBackend::readContext - what exactly does it return? The comment and the description of currentContext differ. Should we have used a struct for this (in case the comment of currentContext is correct)