Fixed missing exit 0
Removed the unsafe atol and atoi commands from the code, in particular for the random_tcl.c file, for which their implementation lead to unexpected and undesired behavior.

Conflicts:

	src/tcl/particle_data_tcl.c
Merge branch '3.1'
Removed the unsafe atol and atoi commands from the code, in particular for the random_tcl.c file, for which their implementation lead to unexpected and undesired behavior.
Merge branch 'master' of github.com:espressomd/espresso