Use long-string-literals with MSVC for other subprojects (clang/mlir/etc)

Author: rnk

llvm/cmake/modules/TableGen.cmake

@@ -68,7 +68,7 @@ function(tablegen project ofn)
   # char literals, instead. If we're cross-compiling, then conservatively assume
   # that the source might be consumed by MSVC.
   # [1] https://docs.microsoft.com/en-us/cpp/cpp/compiler-limits?view=vs-2017
-  if (MSVC AND project STREQUAL LLVM)
+  if (MSVC)
     list(APPEND LLVM_TABLEGEN_FLAGS "--long-string-literals=0")
   endif()
   if (CMAKE_GENERATOR MATCHES "Visual Studio")