build/Makfile-newvs.am: Use Pattern Rules
build/Makfile-newvs.am: Use Pattern Rules

Make use of pattern rules when generating the Visual Studio 2012/2013
Projects from the Visual Studio 2010 projects, which will help to clean up
the file and also avoid problems when running items like 'make -jN dist'.

Distrotech/atk,Distrotech/atk,Distrotech/atk,GNOME/at-spi2-core,GNOME/at-spi2-core,GNOME/at-spi2-core