GitLab

- move vlm to input/
- remove unused libvlc export

* libvlc sources and plugins now define __LIBVLC__ and headers exported to
  plugins (ie, include/vlc_*.h) check for this
* libvlc sources use the value of the "libvlc" component in vlc-config instead
  of vlc
* Apply flags directly to "libvlc" in configure.ac - might temporarily break win32 :)

- Remove opening and closing quote when unescaping

- Do not validate quotes recursively (there is no reason to do that)
  and it is really unlike anything else.
- Do not allow escaping non-ASCII (to avoid UTF-8 breakages)
  or non-printable characters.
[1] we don't support every features of C escaping though

It made little sense to have an header that can only be included
in a single file.
Re-use libvlc.h for generic libvlc internal declarations.

This help suppress dependency of src/misc/modules.c
upon some structs typedefs just for the sake of sizeof.

Fix possible segfault as a side-effect

* Headers in include must contain the structures and prototypes needed
  by the plugins and should be named vlc_*.
* Headers in include/vlc must contain the structures and prototypes
  needed by external libvlc clients

* Moved and renamed some things in headers. 
   - Removed vlc_cpu.h, vlc_error.h (merged in vlc_common)
   - Removed snapshot.h (merged in vlc_vout.h)
   - Removed vlc_spu.h (merged in vlc_osd.h)
   - Removed intf_eject.h and vlc_interaction.h (merged in vlc_interface)
   - Moved all internal headers to src
   - Merged vlc_video.h and video_output.h and move private things to src
   - Removed vlc/intf.h, vlc/aout.h, vlc/vout.h, vlc/decoder.h and vlc/input.h
     (meta headers for use in modules, and often implying too large 
     dependencies)
* Removed some useless dependencies
* Unexported a bunch of functions and structures used only in src/
  (--> Still some work here)
* Finally made input_thread_t and input_source_t (mostly) private. 
  Added input_GetItem to fetch the input_item of an input_thread
* Cleaned up deprecated entries in vlc_symbols.h and bumped up symbol 
  prefix

This commit has a 99% probability of breaking the build, 0.1% of killing
your cat and 0% of getting you hot chicks.

courmisch, you make too much, it's time to have a rest

in two halves to avoid integer overflows after 29 days.

except for POSIX timers case, which is currently the only natively absolute
timers implementation on LibVLC.

Might break stuff, but I cannot test much because of DBus vs Win32 breakage(!)

- and merge some ASM/SSM code