Created a refactored / enhanced version of the Pocolog-Cpp implementation

This version features :
Fast indexing
Fixed file reading (metadata)
Compilefixes
Added MultiFileIndexing
added missing include
fixed nasty bug, that from time to time close std::cout...
fixed reading of timestamps from logfile
fixed first and last sample time in index
added getName call to Index
removed annoying debug output
finished MultiFileIndex implementation