Gtk Builder and item id

[Christian Schoenebeck <schoenebeck linuxsampler org>]

Hi,

I noticed that the current Gtk Builder XML parser does not accept an id for 
"item" elements. Please consider the attached patch to address this.

Background: it should be possible to query menu items at runtime to change 
their labels (text) at any time.

CU
Christian

Attachment: gtk-builder-item-id.patch
Description: Text Data