[PULL][PATCH] Small buffering fixes, start of recv side cleanup

[Jonathan Bastien-Filiatrault]

Greetings,

I have started work again on DTLS. This needs preparation on the read 
side in order to be able to receive datagrams in whole chunks at once.

The first 5 commits include fixes and documentation for every function. 
The last 3 are the actual changes on the read side. The diffstat would 
be negative if the documentation was not added.

The following changes since commit ed3ae748ba6ee8b82e590f6d51d4b8473430c6de:

   prevent a memory leak in the unique_id functions. (2010-08-20 
19:41:34 +0200)

are available in the git repository at:
   git://github.com/jothan/gnutls.git recv-mbuffers

Jonathan Bastien-Filiatrault (8):
       mbuffers: Document the internal mbuffer API.
       mbuffers: Make _mbuffer_remove_bytes return a meaningful error code.
       mbuffers: fix wrong size calculation.
       mbuffers: Add mbuffer_linearize.
       Parenthesize size calculations.
       mbuffers: make _gnutls_io_read_buffered use mbuffers.
       mbuffers: Add _mbuffer_xfree operation.
       Fully mbufferize _gnutls_read and _gnutls_read_buffered.

  lib/gnutls_buffers.c  |  124 
+++++++++++++++++++++-------------------------
  lib/gnutls_buffers.h  |    5 +-
  lib/gnutls_int.h      |    6 +-
  lib/gnutls_mbuffers.c |  131 
++++++++++++++++++++++++++++++++++++++++++++++++-
  lib/gnutls_mbuffers.h |   18 ++++++-
  lib/gnutls_record.c   |   30 ++++++++---
  lib/gnutls_state.c    |   16 +-----
  7 files changed, 231 insertions(+), 99 deletions(-)

Happy hacking,
Jonathan