RPGillespie6/fastcov v1.14

fastcov version 1.14

on GitHub

Minor. bug fixes

• Update to use longform flags when invoking gcov: this is to avoid problems with the --json-format shortform option. Starting with GCC11, -i is deprecated in favor of -j, so using longform avoids future option compatibility issues
• Fix issue where passing --zerocounters and --process-gcno simultaneously resulted in deletion of the gcno files