Integrate VTP and BDX data formats

• Try to integrate vtp data format to TriDAS
• CMake variable to set the experiment
• FCMSimu compiles against the specified dataformat
• floor_offset is a configurable parameter in the datacard
• use of C++11 standard library instead of boost counterpart
• fix: atomic operation in throughput computation
• fix: MAX_PLUGINS_NUMBER is the size of evt.plugin_nseeds_ array
• to be fixed: handle the run start time in a proper way (see this line)
• new utility script to analyse the HM log files

Fixes: #4 (closed) #10 (closed) #15 (closed)