CMakeLists.txt: Compiling the llvm 3.1 release tar with cmake gives version "3.1svn", so allow this version.
CMakeLists.txt: Compiling the llvm 3.1 release tar with cmake gives version "3.1svn", so allow this version.

iamrekcah/clay,iamrekcah/clay,jckarter/clay,iamrekcah/clay,jckarter/clay,aep/clay,mario-campos/clay,mario-campos/clay,aep/clay,mario-campos/clay,aep/clay,iamrekcah/clay,mario-campos/clay,mario-campos/clay,aep/clay,jckarter/clay,iamrekcah/clay,jckarter/clay,jckarter/clay,jckarter/clay,aep/clay,aep/clay