gitignore: update to ignore Debian related files
init.d: update to work with more recent versions of Twisted
collector: don't allow spaces in system name
drac: minimal support for Dell RAC
dell: support for Dell PowerConnect switches
dell: grab speed/duplex through LLDP
generic: use Q-BRIDGE-MIB for generic
foundry: add basic support for Foundry switch

No trunk support since they are not reflected in IF-MIB.  See
FOUNDRY-SN-SWITCH-GROUP-MIB::snMSTrunkPortIndex.
lldp: fix speed collection

Results were not really stored in datastore...