[PATCH 0/4] Refactor release scripts to conform to using git archive

[Andrew Dahl]

The following four patches fix an issue seen during the last user space
release where not all source files were included in xfsprogs.  They each
change xfsprogs, xfstests, xfsdump, and dmapi to all use git archive for
source tarball generation and add 'make realclean' in the release
scripts to ensure the configure and m4/autotools temp files are refreshed.

-Andrew