Update documentation information and fix structure somewhat.

Raise warnings to error level and break compilation.

Replace

  unsigned int i;
  for(i = 0; ...)

with

  for(unsigned int i=; ...)

Fixed compiler warning in function TSHandle(), which passed a 'const uint8_t *' into
dvbpsi_PushPacket() that expected a 'uint8_t *'.

Original patch was modified by Jean-Paul Saman <jpsaman@videolan.org>
- changed license to LGPLv2.1
- general cleanup
- fixed memleaks
- add missing prototypes to bat_private.h
- add static to functions in example/decode_bat.c

Update license information

All original authors and contributors have been contacted and asked the
question: "Do you agree with relicensing libdvbpsi under the LGPLv2.1 ?".

All original authors contributors and responded positively to this request
as summurized in this commit log:

  Authors and committers                        GPLv2 -> LGPLv2.1 License change
================================================================================
  Arnaud de Bossoreille de Ribou <bozo@via.ecp.fr>                 Yes
  Johan Bilien <jobi@via.ecp.fr>                                   Yes
  Johann Hanne <jhml@gmx.net>                                      Yes
  Andrew John Hughes <gnu_andrew@member.fsf.org>                   Yes
  Tristan Leteurtre <tristan.leteurtre@anevia.com>                 Yes
  Damien Lucas <damien.lucas@anevia.com>                           Yes
  Viktor Luzin <vl@msp.ru>                                         Yes
  Christophe Massiot <massiot@via.ecp.fr>                          Yes
  Jiri Pinkava <jiri.pinkava@vscht.cz>                             Yes
  Jean-Paul Saman <jpsaman@videolan.org>                           Yes
  Gildas Bazin <gbazin@videolan.org>                               Yes
  Derk-Jan Hartman <thedj@videolan.org>                            Yes
  Sam Hocevar <sam@videolan.org>                                   Yes
  Sigmund Augdal <dnumgis@videolan.org>                            Yes
  Laurent Aimar <fenrir@videolan.org>                              Yes

From SCTE 35 (2004) specification.

From SCTE 35 2004 specification

Take it from your distro if you need it

- added libdvbpsi.spec.in
- generate libdvbpsi.spec from configure