npapi hasn't been ported to windows 64 yet

This should fix the usual playback issues we had so far.

This reverts commit 48be3549.

\Program Files (x86) is for 32bits programs
Fixes #4257

fix suggested by jb

The preference panel needs to know which of open or save file dialog
it should use. Here we have 27 load and 4 save cases, plus 2 fonts
that were not correctly marked as such in projectM.

If the menu item says hide, really always hide.

p_demux value is not defined

This is useless and awkward.

build-npapi is a dep of package-win32-base-exe and not
package-win-common, because i don't think the mozilla plugin builds for
windows CE

Assumes we always want to build & package mozilla plugin

Tested on GMA HD, ATI/NVIDIA
Untested on GMA4500

Needs testing on more cards and samples before it is committed upstream

Support HTTP Live Streaming as described in the IETF draft standard:
 * http://tools.ietf.org/html/draft-pantos-http-live-streaming-04#page-8
and Apple its description:
 * http://developer.apple.com/library/ios/#documentation/networkinginternet/conceptual/streamingmediaguide/Introduction/Introduction.html#//apple_ref/doc/uid/TP40008332-CH1-DontLinkElementID_29

Not implemented (yet):
- Encrypted streams (EXT-X-KEY)
- playlist reloading for live streams

Yes, this code is weird, but well

If the version header is there, the main one should be too.