Commit Briefs
use test(1) -eq and -ne to compare integers, and reduce quoting
This brings the rest of the regression test scripts in line with patch.sh.
merge new diff implementation from the git.gameoftrees.org diff.git repository
This new diff implementation was started by Neels Hofmeyr during the u2k20 hackathon and now replaces diffreg.c code lifted from the OpenBSD base system. The integration of this code into Got was done by me. Got now uses the patience diff algorithm by default. The diff.git repository will remain the primary repository for the diff code, which already compiles and runs on other operating systems such as Linux. Any fixes and improvements for files inherited from the diff.git repository should be written against that repository and synced to got.git afterwards.
add a -q option to tests for quiet output and use it for 'make regress'
Previous default output remains when test cases are run individually. ok tracey
fix staging of multiple files with -p
ok semarie