VMware Infrastructure Perl Toolkit Code

Add a missing SelectionSpec to the computeResourceRpTraversalSpec in get_search_filter_spec.

Add support for setting and querying version information.

The VI Perl version is defined as the $VERSION of VIRuntime.pm. A
VILib-enabled script can specify its own version number by setting the
$Util::script_version variable. Calling a script with --version will
print the version of VI Perl itself, along with the script if
specified.

Added two new samples:
guestvars.pl - Script to inspect and modify Guest Variables
removabledevices.pl - Script to list, connect, and disconnect removable virtual devices

Added a new function to the VILib Util package:
get_inventory_path - return the inventory path for an entity (view). The inventory path can later be passed to the FindByInventoryPath operation to retrieve the ManagedObjectReference for the entity.

Reverting the documentation to the alpha version. Too many issues to consider at this point to try to upgrade the external documentation prior to the release.

Deleting installation guide that includes information about the Appliance.

corrected links to doc.

Simplify the check for required -- 0 and undef both correspond to not
required, so we can do a straight boolean check.

Building on the last fix (to handle undef parameters), simplify the
parameter-passing logic for vmregister.pl.

If a method parameter is set to undef, ignore it rather than failing.
Checking in on behalf of Shivraj, who doesn't have his SF/svn account
set up yet.

Remove obsolete help messages.