xfsdump: Refactor release scripts to conform to using git archive

Refactored release scripts to conform to using git archive

When generating a release, there is a risk of some files being
stale, such as configure and the m4/autotools temp files. This
is fixed with a clean at the beginning of the release generation.
In addition, there is no uniformity in the current method of
source tar generation between xfs utilities. Using git archive
solves this issue accross all utilities.

Signed-off-by: Andrew Dahl <adahl@sgi.com>
Reviewed-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>

2 files changed