Improved performance in manoc_dump script:

-in save action now system tar will be used to create the archive (where possible)
-in load action improved the memory management
Bugfix to Netwalker: default vlan on arpinfo
Bugfixes to dumper
Bugfix to Dumper: now works also with perl 5.8.8
Merge branch master to import Data::Dumper updates

Conflicts:
	lib/Manoc/App/Dumper.pm
	lib/Manoc/DataDumper.pm
Yet another bugfix on dumper
Updated jquery.datatable to fix sort issues with Safari/Chrome
Merge branch 'master' of git://github.com/ManocLabs/manoc