upgrade to cppunit 1.13.2

* remove obsolete patch part
* enable x64 target for vc project file on win64

Change-Id: Ie794c08c9f739ad8c9c68c423f72e79ed4f6b0ff
Reviewed-on: https://gerrit.libreoffice.org/10856
Reviewed-by: Thomas Arnhold <thomas@arnhold.org>
Tested-by: Thomas Arnhold <thomas@arnhold.org>

external/cppunit/unix.patch

@@ -8,16 +8,3 @@
  }
  
  
-@@ -34,7 +33,11 @@
- std::string 
- DynamicLibraryManager::getLastErrorDetail() const
- {
--  return "";
-+  const char *last_dlerror = ::dlerror();
-+  if (last_dlerror != NULL)
-+    return last_dlerror;
-+  else
-+    return "";
- }
- 
-