Rename TU names to not conflict with libc++.

In order to easily merge libc++ and libc++abi static archives it's important
that none of the source files share the same name.
(See http://stackoverflow.com/questions/3821916/how-to-merge-two-ar-static-libraries-into-one)

This patch renames source files which share a name with libc++ sources.

llvm-svn: 287327

libcxxabi/src/CMakeLists.txt

@@ -1,6 +1,6 @@
 # Get sources
 set(LIBCXXABI_SOURCES
-  abort_message.cpp
+  # C++ABI files
   cxa_aux_runtime.cpp
   cxa_default_handlers.cpp
   cxa_demangle.cpp
@@ -11,11 +11,14 @@ set(LIBCXXABI_SOURCES
   cxa_unexpected.cpp
   cxa_vector.cpp
   cxa_virtual.cpp
-  exception.cpp
+  # C++ STL files
+  stdlib_exception.cpp
+  stdlib_stdexcept.cpp
+  stdlib_typeinfo.cpp
+  # Internal files
+  abort_message.cpp
   fallback_malloc.cpp
   private_typeinfo.cpp
-  stdexcept.cpp
-  typeinfo.cpp
 )
 
 if (LIBCXXABI_ENABLE_EXCEPTIONS)