Added OpenMP times output to file.
OpenMP time measure now is divided in verbose mode or silent.
Internal count now is in double format to simplify.
Fixed nanoseconds handling to avoid time artifacts.
Fixed time_add_time_slot to check max and min time.
Adapted bam recalibration phase 2 to OpenMP with new timestats
time_add_time_slot function.
Added file output times support to timestats.
Bugfixing in timestats uses.
Added full support to timestats file output and postproccess.
Restored line of code erased in some previous commit (batch memory free
in data_collector.c).