Script cleanup

Refactored out all shellcheck warnings and ugly hacks.

Spaces to tabs.

We have qcsrc/tools/compilationunits.sh which runs as it's named, we have qcsrc/tools/qcc.sh which is used by it AND qcsrc/Makefile for compiling the progs. I moved env vars from both of the other files to qcc.sh to remove duplicate variable definitions. GNU make only gmqcc flags are now in qcc.sh's main driver code and tests only gmqcc flags are in compilationunits.sh .