DVB: added support for LATM AAC

To be used with DVB-T2.
Support for DVB-T2

Basic support for DVB-T2. New option for changing the channel switching approach.

Signed-off-by: xpc1000 <xavier_portell@hotmail.com>
Internal LAVFilters: Add some classes to handle the filters.
Internal LAVFilters: Modify the graph manager to use LAVFilters.

Note that currently the "internal" LAVFilters share their settings with their standalone version.
Internal LAVFilters: Basic modifications to make the UI consistent.
Internal LAVFilters: Use the default settings instead of sharing the settings with the standalone version of the filters.
Internal filters: Add new menu entries to enable/disable all audio/video decoders.
Internal LAVFilters: Give more flexibility for the path from where to load the filters.

The path can be controlled with a registry key HKLM\SOFTWARE\Gabest\Media Player Classic\Media Player Classic\LAVFiltersPath. However if a LAVFilters folder exists together with the executable, it will be prefered.
Internal LAVFilters: Check the version of LAVFilters before using it.
Merge branch 'DVB-T2-Final' of https://github.com/xpc1000/mpc-hc into dvb

Conflicts:
	src/mpc-hc/mpcresources/mplayerc.br.rc
	src/mpc-hc/mpcresources/mplayerc.by.rc
	src/mpc-hc/mpcresources/mplayerc.ca.rc
	src/mpc-hc/mpcresources/mplayerc.cz.rc
	src/mpc-hc/mpcresources/mplayerc.de.rc
	src/mpc-hc/mpcresources/mplayerc.el.rc
	src/mpc-hc/mpcresources/mplayerc.es.rc
	src/mpc-hc/mpcresources/mplayerc.eu.rc
	src/mpc-hc/mpcresources/mplayerc.fr.rc
	src/mpc-hc/mpcresources/mplayerc.he.rc
	src/mpc-hc/mpcresources/mplayerc.hu.rc
	src/mpc-hc/mpcresources/mplayerc.hy.rc
	src/mpc-hc/mpcresources/mplayerc.it.rc
	src/mpc-hc/mpcresources/mplayerc.ja.rc
	src/mpc-hc/mpcresources/mplayerc.kr.rc
	src/mpc-hc/mpcresources/mplayerc.nl.rc
	src/mpc-hc/mpcresources/mplayerc.pl.rc
	src/mpc-hc/mpcresources/mplayerc.ro.rc
	src/mpc-hc/mpcresources/mplayerc.ru.rc
	src/mpc-hc/mpcresources/mplayerc.sc.rc
	src/mpc-hc/mpcresources/mplayerc.sk.rc
	src/mpc-hc/mpcresources/mplayerc.sv.rc
	src/mpc-hc/mpcresources/mplayerc.tc.rc
	src/mpc-hc/mpcresources/mplayerc.tr.rc
	src/mpc-hc/mpcresources/mplayerc.ua.rc
	src/mpc-hc/mpcresources/text/mplayerc.de.rc.txt
	src/mpc-hc/mpcresources/text/mplayerc.el.rc.txt
	src/mpc-hc/mpcresources/text/mplayerc.ro.rc.txt