Bug 832280 - Disable MSVC warning C4482: nonstandard extension used: enum 'xyz' used in qualified name. r=ted

configure.in

@@ -2181,6 +2181,9 @@ ia64*-hpux*)
         CXXFLAGS="$CXXFLAGS -W3 -Gy -Fd\$(COMPILE_PDBFILE)"
         # MSVC warning C4345 warns of newly conformant behavior as of VS2003.
         # MSVC warning C4351 warns of newly conformant behavior as of VS2005.
+        # MSVC warning C4482 warns when an enum value is refered specifing the
+        # name of the enum itself.  This behavior is allowed in C++11, and the
+        # warning has been removed in VS2012.
         # MSVC warning C4800 warns when a value is implicitly cast to bool,
         # because this also forces narrowing to a single byte, which can be a
         # perf hit.  But this matters so little in practice (and often we want
@@ -2188,7 +2191,7 @@ ia64*-hpux*)
         # MSVC warning C4819 warns some UTF-8 characters (e.g. copyright sign)
         # on non-Western system locales even if it is in a comment.
         CFLAGS="$CFLAGS -wd4819"
-        CXXFLAGS="$CXXFLAGS -wd4345 -wd4351 -wd4800 -wd4819"
+        CXXFLAGS="$CXXFLAGS -wd4345 -wd4351 -wd4482 -wd4800 -wd4819"
         # make 'foo == bar;' error out
         CFLAGS="$CFLAGS -we4553"
         CXXFLAGS="$CXXFLAGS -we4553"