Add CMake support for Visual Studio and installation, with an expected "install" for CMAKE_INSTALL_PREFIX, and updated test scripts to consume the CMake installation.

git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@25791 e7fa87d3-cd2b-0410-9028-fcbf551c1848
diff --git a/Test/runtests b/Test/runtests
index 5826951..a93444c 100755
--- a/Test/runtests
+++ b/Test/runtests
@@ -2,7 +2,7 @@
 
 TARGETDIR=localResults
 BASEDIR=baseResults
-EXE=./glslangValidator
+EXE=../build/install/bin/glslangValidator
 mkdir -p localResults
 
 #