CPU time tools

Topics
	Timer
	Timer to measure elapsed time.

Functions
subroutine, public	mod_print_cpu_time::print_cpu_time ()
	Print all measured CPU times.

Detailed Description

• a timer class in timer.f90
• a declaration of timers in variables.f90
• a routine that print the different CPU times print_cpu_time.f90

Times are added time iteration after time iteration. Thus, the whole time over the simulation is computed.