This simplifies error and memory handling.
A few memory leaks were fixed.

Modules must be placed in the subfolder modules/ of the zip package.
Accepted file extensions are .luac and .lua (probed in that order)

Main script's name must be "script.lua"
Modules are not supported yet

This will prevent the watchdog window to pop up if the network is slow

If an Extension didn't respond in 10s, a dialog pops up and allows
the user to kill the Extension (thread cancellation)

In Lua files, embed an image file (PNG, ...) in a string.

Very simple, displays a series of pixmaps in a loop animation.
The spinning icon can be used to indicate background activity,
especially designed for Lua SDs and Lua extensions.

This shouldn't happen unless the codec is buggy

Do not start live playback when there is not enough data available. There
should at least be 3 times the target duration of data segments.

The httplive stream_filter ignored HTTP port numbers other then 80 and 443.
These where dectected by HTTP access input. Other port numbers were simply
ignored.
The patch now uses the original portnumber and carries it along when
handling relative_URI() and download URI in AccessOpen() functions.

This reverts commit 01dbb084.

I must have had something really wrong going on in scratchbox for this
commit to fix things.

Untested

This simplifies memory handling in most cases.