CMake: Define ${LLVM_TABLEGEN_EXE} with explicit ${CMAKE_EXECUTABLE_SUFFIX} on standalone build. Or build might fail with NMake.

Thanks to Nicolas Le Gland!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@140360 91177308-0d34-0410-b5e6-96231b3b80d8

CMakeLists.txt

@@ -47,10 +47,10 @@ if( CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR )
   link_directories("${PATH_TO_LLVM_BUILD}/lib")
 
   if( EXISTS "${CLANG_PATH_TO_LLVM_BUILD}/bin/tblgen${CMAKE_EXECUTABLE_SUFFIX}" )
-    set(LLVM_TABLEGEN_EXE "${PATH_TO_LLVM_BUILD}/bin/tblgen")
+    set(LLVM_TABLEGEN_EXE "${PATH_TO_LLVM_BUILD}/bin/tblgen${CMAKE_EXECUTABLE_SUFFIX}")
   else()
     # FIXME: This is an utter hack.
-    set(LLVM_TABLEGEN_EXE "${PATH_TO_LLVM_BUILD}/bin/Debug/tblgen")
+    set(LLVM_TABLEGEN_EXE "${PATH_TO_LLVM_BUILD}/bin/Debug/tblgen${CMAKE_EXECUTABLE_SUFFIX}")
   endif()
 
   set( CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin )