Tune egs_utilities.mortran for uniform run control
Tune egs_utilities.mortran for uniform run control

- Set variable is_uniform_run to its default $URC-DEFAULT.
- Parse arguments for -u or --urc and set is_uniform_run accordingly.
- Inform user that the uniform run control is activated.

crcrewso/EGSnrc,crcrewso/EGSnrc,MartinMartinov/EGSnrc,mchamberland/EGSnrc,mchamberland/EGSnrc,mchamberland/EGSnrc,crcrewso/EGSnrc,mchamberland/EGSnrc,nrc-cnrc/EGSnrc,mchamberland/EGSnrc,nrc-cnrc/EGSnrc,crcrewso/EGSnrc,nrc-cnrc/EGSnrc,MartinMartinov/EGSnrc,nrc-cnrc/EGSnrc,nrc-cnrc/EGSnrc,mchamberland/EGSnrc,crcrewso/EGSnrc,MartinMartinov/EGSnrc,MartinMartinov/EGSnrc,MartinMartinov/EGSnrc