Teach our tests about special cases for VS 11

Teach the CheckCompilerRelatedVariables test to verify MSVC11.  Update
the special cases already in the Preprocess and VSExternalInclude tests
for VS 10 to work for VS 11 too.

Tests/CheckCompilerRelatedVariables/CMakeLists.txt

@@ -34,6 +34,9 @@ endif()
 if(DEFINED MSVC10)
   math(EXPR msvc_total "${msvc_total} + 1")
 endif()
+if(DEFINED MSVC11)
+  math(EXPR msvc_total "${msvc_total} + 1")
+endif()
 
 echo_var(MSVC)
 echo_var(MSVC60)
@@ -42,6 +45,7 @@ echo_var(MSVC71)
 echo_var(MSVC80)
 echo_var(MSVC90)
 echo_var(MSVC10)
+echo_var(MSVC11)
 
 if(MSVC)
   #

Tests/Preprocess/CMakeLists.txt

@@ -37,6 +37,9 @@ endif("${CMAKE_GENERATOR}" MATCHES "Visual Studio")
 if("${CMAKE_GENERATOR}" MATCHES "Visual Studio 10")
   set(PP_VS100 1)
 endif("${CMAKE_GENERATOR}" MATCHES "Visual Studio 10")
+if("${CMAKE_GENERATOR}" MATCHES "Visual Studio 11")
+  set(PP_VS110 1)
+endif("${CMAKE_GENERATOR}" MATCHES "Visual Studio 11")
 
 # Some tests below check the PP_* variables set above.  They are meant
 # to test the case that the build tool is at fault.  Other tests below
@@ -52,7 +55,7 @@ endif("${CMAKE_GENERATOR}" MATCHES "Visual Studio 10")
 # must not have it escaped inside the configured header.
 set(STRING_EXTRA "")
 
-if(NOT BORLAND AND NOT PP_VS70 AND NOT PP_VS100)
+if(NOT BORLAND AND NOT PP_VS70 AND NOT PP_VS100 AND NOT PP_VS110)
   # Borland, VS70 IDE: ;
   # The Borland compiler will simply not accept a non-escaped semicolon
   # on the command line.  If it is escaped \; then the escape character

Tests/VSExternalInclude/CMakeLists.txt

@@ -6,7 +6,7 @@ IF(${CMAKE_GENERATOR} MATCHES "Visual Studio 6")
 ELSE(${CMAKE_GENERATOR} MATCHES "Visual Studio 6")
   SET(PROJECT_EXT vcproj)
 ENDIF(${CMAKE_GENERATOR} MATCHES "Visual Studio 6")
-IF(${CMAKE_GENERATOR} MATCHES "Visual Studio 10")
+IF(${CMAKE_GENERATOR} MATCHES "Visual Studio 1[01]")
   SET(PROJECT_EXT vcxproj)
 ENDIF()
 
@@ -46,7 +46,7 @@ ADD_DEPENDENCIES(VSExternalInclude lib2)
 # and the sln file can no longer be the only source
 # of that depend.  So, for VS 10 make the executable
 # depend on lib1 and lib2
-IF(MSVC10)
+IF(MSVC10 OR MSVC11)
   ADD_DEPENDENCIES(VSExternalInclude lib1)
 ENDIF()