commit FS#9027 - conditional viewports

** BREAKS CURRENT WPS's  **
* %P has been removed, merged with the new %pb
* %pb is now %pb or %pb|bitmap|x|y|width|height| (any of those params can be - to use sane defaults... check wiki/task for more explaination)

* New %Vl and %Vd tags which are used to setup and display conditionaly displayed viewports (%Vl|<id>|<usual %V params>| to set up, then %Vd<id> to enable the viewport
* bumps the max allowed viewport count to 24
* you can setup 3 different progressbars in a WPS... max of one per viewport though

http://www.rockbox.org/tracker/task/9027?getfile=16785 is a simple perl script to convert old %P/%pb to the new %pb syntax

I'll commit changes to the cabbie wps soon which shows how to use %Vl/%Vd properly...

Reminder: %m will be removed soonish also so when fixing your WPS's remember to use conditional viewports to replace %m


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17759 a1c6a512-1295-4272-9138-f99709370657

wps/Rockboxed.138x110x2.wps

@@ -2,7 +2,6 @@
 # License: GNU GPL v2 or later.
 %wd
 %X|bg-138x110x2.bmp|
-%P|pg-grey-118.bmp|
 %xl|A|mode-grey.bmp|68|91|4|
 %xl|B|shuffle-grey-medium.bmp|35|91|
 %xl|C|volume-grey.bmp|15|93|9|
@@ -14,7 +13,7 @@
 %al %s%ac%?id<%id|%d1>%ar 
 %al %s%ac%?it<%it|%fn>%ar 
 %ac%t3%ig;%ac%iy 
-%pb|5|10|128|
+%pb|pg-grey-118.bmp|10|-|118|5|
 %al  %pc%ac%?fc<mp1|mp2|mp3|aiff|wav|vorbis|flac|mpc|a52|wavpack|alac|aac|shn|sid|adx|nsf|speex|spc|ape|wma|unknown>%ar%pt  
 %?ps<%xdB>
 %?mp<%xdAb|%xdAa|%xdAb|%xdAc|%xdAd>