FusionInventory agent 2.2.0 release candidate

Hello happy fusion users.

The fourth release candidate for the 2.2.0 version of the agent, as well 
as the first release candidates of the network tasks, have been 
released. We expect them to be the last before final release.

FusionInventory agent 2.2.0RC4:
http://forge.fusioninventory.org/attachments/download/517/FusionInventory-Agent-2.1.9904.tar.gz

NetDiscovery task 2.0RC1:
http://forge.fusioninventory.org/attachments/download/519/FusionInventory-Agent-Task-NetDiscovery-1.9901.tar.gz

NetInventory (ex SNMPQuery) task 2.0RC1:
http://forge.fusioninventory.org/attachments/download/521/FusionInventory-Agent-Task-NetDiscovery-1.9901.tar.gz

Those are pure code source releases, without bundled libraries or perl 
interpreter, expected to be manually installed through classical sequence:
perl Makefile.PL && make && make install

Alternatively, they can also get executed without installation, by 
running the agent directly from the extraction directory.

Classical standalone distribution for Windows and Unix should follow soon.

Here are some of the major changes  documented in the changelog for this 
new branch:
* large speed improvement: up to 150% for a local inventory

* better multitasking support:
  - the agent use fork() to run task if needed, instead of running a new