Allow the "manuf" file to contain well-known MAC addresses and address

Allow the "manuf" file to contain well-known MAC addresses and address
ranges specified with a mask, as well as manufacturer OUIs.  Match the
address range values, as well as MAC addresses and manufacturer OUIs,
when translating MAC addresses to names.

Have "make-manuf" read a file containing the well-known addresses and
append it to the list of OUIs.

git-svn-id: http://anonsvn.wireshark.org/wireshark/trunk@6233 f5534014-38df-0310-8fa8-9805f1628bb7