Runtime: new guest OS type for Solaris 11
Frontends/VirtualBox: add new patterns for Solaris 11 guest OS type, reuse the icon
Frontends/VBoxManage: more details for "list ostypes"
Main/xml: make guest OS type in config file an arbitrary string (still validated/mapped in the old way in the settings code), remove hardcoded limit of 8 network adapters
Main/Global: move list of valid guest OS types into a single place, add function to get the network adapter limit for each chipset type
Main/Console+Machine+Snapshot+NetworkAdapter+Appliance+VirtualBox+Guest+SystemProperties: consistently use the appropriate network adapter limit so that ICH9 chipset can use 36 network adapters, adapt to cleaned up guest OS type handling, remove leftover rendundant guest OS mapping, whitespace
Network/NAT: release log message cosmetics, allow unlimited number of instances, fix maxconn clamping
Network/PCNet+VirtioNet+E1000: allow unlimited number of instances