Add dependsexec to themecode

[slackerlinux85@…]

this small patch adds dependsexec to the ui code(im currently using a old version of this patch and it works great sofar)

this checks for the existance of a file and if its executable and hides a menu entry if file doesnt exist or isnt executable

example:

     <button>
        <type>GAME</type>
        <text>Steam</text>
        <description>Launch steam</description>
        <action>EXEC steam</action>
        <dependsexec>/usr/bin/steam</dependsfileexec>
    </button>

would only show a menu entry for steam if its installed this could also be used to show xbmc the only downside is you have to edit the menu's it would be nice if there was a custom user menu that could be appended whatever menu theme you have selected

[slackerlinux85@…]

adds dependsexec to themecode

[slackerlinux85@…]

woops! that example is wrong <dependsexec>/usr/bin/steam</dependsfileexec> should be(no file in the closing dependsexec that was the old name for it) <dependsexec>/usr/bin/steam</dependsexec>

[slackerlinux85 <slackerlinux85@…>]

In 2da59647f3ba247468a547a0fd9bfcc257e51618/mythtv:

MythThemedMenu?: Add dependsexec option to the main menu

This option allows for menu entries that will only be visible if a particular
executable is found. For example the menu entry below will add an XBMC menu
entry if the XBMC executable is found at /usr/bin/xbmc.

<button>

<type>TV</type>
<text>XBMC</text>
<description>Launch XBMC</description>
<action>EXEC xbmc</action>
<dependsexec>/usr/bin/xbmc</dependsexec>

</button>

Fixes #12021.

Signed-off-by: Paul Harrison <pharrison@…>