update to use readlink
updates to start to support MPMD for mpirun,aprun
support for a single json output from xalt_parse_mpirun_args.in.py
support for parsing command line with xalt_parse...
1st attempt with multiple jobs with mpirun
passed first test of mpmd
runtime exit_code fix
fixed link exit status
Make json write linkdata in number not strings when possible
Make json write rundata in numbers not strings when possible
moving to TAG_VERSION 0.5.2