EnsureUTF8 would replace invalid bytes sequences with question marks.

Most of the code was already there anyway. This allows UTF-8 autodetection
without a dedicated UTF8-to-UTF8 iconv() handle.

* We now have an (ugly) way to rename nodes

* Fix enabling of the step forward/backward functions

According to the wxWidgets documentation, it works. But of course, you
don't want to trust the wxWidgets documentation, particularly when it
deals with characters encoding. Or rather, you'd like to trust the
documentation, but you can't trust the actual implementation to work
until you tested it.

So lets see if it works, and revert commit it tomorrow if it sucks.

  (if local charset is UTF-8, this is similar to wcstombs())
- FromUTF16(): converts a host-order UTF-16 byte sequence to UTF-8

Might fix PIC linking issues on amd64

reported by Diego 'Flameeyes' Pettenò

You need to escape (with \):
* quotes that are part of a file's name or option's value
* backslashes

    this allows the persistable properties to be fully loaded before initialization and allow
    for control to initialize faster in design mode. AUTOLOOP property now works properly
persistpropbag.cpp, vlccontrol.h: decoupled volume property from VLC so that value can be used
    without having VLC initialized
test.html: added volume control

* fixed the copying of the re-worked http-interface to our release bundle. (not really clean, but I don't know how to do this in a better way...)

* vlm fix. change "input :foo=bar :foo2=bar2" into vlm compatible option handling
* mosaic fix. always enable transcode when using an sout chain