Temp commit
Moved ksDeepDup from split to keyset module
Implemented a function to allow filtering with a given argument
Implemented a function to retrieve a deep copy of a keys metakeyset
Implemented additional array functions
Reimplemented the get direction of hosts to parse comments according to the new formatting specification
Reimplemented the set direction hosts to correctly serialise the new comment metadata
Adjusted hosts README
Adjusted the METADATA documentation
Changed the implementation of elektraKeyGetMetaKeySet to return only a flat copy (keys are locked anyway)
Removed the ksFilter variant without argument
Removed an unneccessary guard clause and improved documentation
Fixed small issues in the contract of hosts and split its implementation into two separate files
Added an additional ipv6 host to the hosts-read-simple test
Merged upstream to include fixes for the key name options renaming
Fixed the renamed KEY_META_NAME option
Make sure that the comment array is always a valid array (i.e. starts with #0)
Moved ksDeepDup to kdbproposal
docu + mainpage

some improvements as suggested by Stefan Derkits
fix mingw