EX-64 (jebene/kmeng) - moved MuTect T/N sample name handling to
mutect.py and called handling in normalized rather than in merged
EX-64(kmeng): Created decorator function which allows normalized.py to
specify a decorator affix to be inserted into a file name, and delegate
the task to each caller to figure out the specific caller-compatible way
to insert the file name.
EX-64(kmeng): Deleting legacy caller-module-unaware code in
normalize.py.