Bug 1370511 - Suppress more warnings from MSVC when compiling ICU. r=ted.mielczarek

MozReview-Commit-ID: 6N48ksCMnyn

--HG--
extra : rebase_source : 02130293e25495f8bed3c00e580ae50d9ae548fc

config/external/icu/defs.mozbuild

@@ -47,3 +47,14 @@ if CONFIG['CLANG_CL']:
         '-Wno-macro-redefined',
         '-Wno-microsoft-include',
     ]
+
+if CONFIG['_MSC_VER'] and not CONFIG['CLANG_CL']:
+    CFLAGS += [
+        '-wd4005', # 'WIN32_LEAN_AND_MEAN' : macro redefinition
+        '-wd4996', # The compiler encountered a deprecated declaration.
+    ]
+    CXXFLAGS += [
+        '-wd4005', # 'WIN32_LEAN_AND_MEAN' : macro redefinition
+        '-wd4333', # '>>' : right shift by too large amount, data loss
+        '-wd4996', # The compiler encountered a deprecated declaration.
+    ]