Minor bug fixes for gitar.sh
Minor bug fixes for gitar.sh

Fixed a preflight testing check bug introduced for finding nested git
directories.  This only affected testmode.

Fixed an argument bug where test was not properly using $INPUT instead
of $1.

Fixed a dedupe_only bug where dedupe_only was never successfully executed.
This was because I forgot to convert the compression_type checking to the
new compression_list method in the gitar() function.

samrocketman/drexel-university,samrocketman/drexel-university,samrocketman/drexel-university,samrocketman/drexel-university