Log Message:
Changes 9.09:
* Background printing (BGPrint) is a new feature allowing an accumulated page \ 
clist to be rendered by one or more rendering threads whilst the interpreter (in \ 
the "main" thread) continues to accumulate the subsequent page's \ 
clist. For certain classes of file this can result in a useful performance \ 
increase.
* GrayDetection allows suitably written devices to detect "color" \ 
input in near neutral tones (i.e. near monochrome) and to convert \ 
"on-the-fly" to pure grayscale, whilst retaining the ability to print \ 
full color on demand. This is primarily aimed at workflows where saving ink \ 
(especially color inks) is required.
* LittleCMS2 and libpng have both been updated to the latest versions.
* Support has been added to build the Ghostscript DLL for WinRT for x86, x64 and \ 
ARM (Requires MS Visual Studio 2012 Pro).
* Processing of Windows command line arguments into UTF8 (as presaged a few \ 
releases ago) has been enhanced and enabled by default.
* The URW Postscript font set has been updated to the latest version, fixing \ 
many compatibility problems with the Adobe fonts.
* Plus the usual round of bug fixes, compatibility changes, and incremental \ 
improvements.