Fixes for Mate Plugin:

Fixes for Mate Plugin:
As suggested by Martin Regner:
- Use strtod() instead of strtof()

From Luis Ontanon:
- changes the id of mate items to be integer (the old string ID
imposed a lenght limit and as mate fileds had become dynamic it makes
no more sense anymore)

- fixes a huge avp leak on reinit (every avp object was leaked when a
new file was loaded)

- adds the "Lib" AVP to the Action=Include AVPL to include definitions
>from matelib

- rename mate.[dll/so] to zzmate.[dll/so] so it gets initialized as
the very last protocol (so that fields from every dissector can be
used).

git-svn-id: http://anonsvn.wireshark.org/wireshark/trunk@12728 f5534014-38df-0310-8fa8-9805f1628bb7