[MPlayer-dev-eng] [PATCH] OSD menu property support auto-update

[Ulion]

Hello,

Current implement of property in libmenu will not update value after
displayed, but for some mutable properties, support auto-update will
make more sense than display outdated value of properties.
Here's patch for auto-update feature. Only if a property entry in
menu.conf add an attribute 'auto-update="yes"'  or "on" or "1", the
entry with this auto-update attribute will always be updated before
draw it's value to screen.
A good example is the coming chapter property, its value is delay
updated (until the seek finished) so without auto-update feature
chapter property will always display the old chapter before changing
chapter.

-- 
Ulion
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