[Info-VCDImager] GNU vcdimager 0.7.23 available

[R. Bernstein]

Here is what's new in version 0.7.23:

* Add libvcdinfo vcdinfo_get_area_selection() a routine to get the 
  selection number represented by an area for a specified a point
  location
* Add libvcdinfo vcdinfo_get_set_resolution() a routine to get the 
  resolution for a given segment
* hack on memory leaks some more
* vcdxrip options more like vcd-info options
* check that selection area hot-spot values don't exceed 255. 
* Update documentation
* Remove gcc 4 warnings and potential problems noted
* make --disable-static --enable-shared work with --versioned-libs