This patch optimizes proto_tree_prime_hfid() + friends and
plugs a memleak in the process.
From me:
Removed unused hfindex in proto_tree_new_item()
Fixed ref_count entry in struct header_field_info.
svn path=/trunk/; revision=29137
* adding pydoc documentation to doc/README.python
* possible to access directly libwireshark via libhandle and raw_<tvb|pinfo|tree>
* transform some methods into properties
* update sample to reflect changes/features
* adding comments!!!
svn path=/trunk/; revision=28532