Fix: Solve problem of _source directory.

build/makepack-dolibarr.pl

build/rpm/dolibarr_fedora.spec

build/rpm/dolibarr_generic.spec

build/rpm/dolibarr_mandriva.spec

build/rpm/dolibarr_opensuse.spec

build/tgz/tar_exclude.txt

build/zip/zip_exclude.txt