Liquid XML Runtime for Visual C++ 11.0 XP is now included in the latest Liquid XML 2013 point release (11.0.12).
Microsoft added a new option to Visual Studio 2012 Update 1 to allow you to target XP in your C++ build. To Deploy on Windows XP, all DLLs need to be built with the XP flag set. The new Liquid XML runtimes allow you to do this.
Note: You will need to manually change the setting in the generated C++ project file for XP. Also, you will need to select the XP version of the LIB and DLL Liquid Runtime files.