-activex: implement _NewEnum property on log.messages collection to allow for "For each message in log.messages" construct in VB and other languages

it was merely a slower (and buggier) recv() nowadays.

- Minor optimization for POLLHUP case

Qt4 : SimplePrefs: various fixes, remove some widgets, uniformity, cleaning and hiding for Win32/others for some options.

 which weren't used by VLC. This now adds a new b_used flag to module_cache_t which is set to VLC_TRUE once we know that the cached version of the plugin is usable (and thus gets attached to something). If it's not usable, it wont be attached so we tell ModuleDelete() not to try dettaching it.

Patch by ILEoo to make the telnet interface work with "telnet" again (on linux). Looks ok according to the recv(2) manpage. Please fix if this is flawed.

  to avoid a conflict with Carbon API)

(Fixed lol-vlc.aac segfault, http://sam.zoy.org/zzuf/)

(But it still won't be decoded by ffmpeg, we provide extra data too late)

Added VC-1 detection (SMPTE RP 227)

Use vlc_b64_encode_binary and remove ap_* in rtp.c
Fixed 2 invalid memory access and 1 stack corruption in rtp.c (Fixed
the report of rtp segfault with gcc 4.1 by xxcv)

(Fixed 'assert (pufd < ufd + (sizeof (ufd) / sizeof (ufd[0])))' reported
 by xxcv)