ModuleGroup: Add several missing files to their groups.

Author: nkcsgexi

stdlib/public/core/GroupInfo.json

@@ -74,14 +74,16 @@
   ],
   "C": [
     "BridgeObjectiveC.swift",
+    "BridgeStorage.swift",
     "Builtin.swift",
     "VarArgs.swift",
     "CTypes.swift"
   ],
   "Reflection": [
     "Mirrors.swift",
     "Mirror.swift",
-    "Reflection.swift"
+    "Reflection.swift",
+    "ObjCMirrors.swift"
   ],
   "Math": [
     "FloatingPoint.swift",
@@ -91,7 +93,8 @@
     "FixedPoint.swift",
     "IntegerParsing.swift",
     "Bit.swift",
-    "SetAlgebra.swift"
+    "SetAlgebra.swift",
+    "BuiltinMath.swift"
   ],
   "Optional": [
     "ImplicitlyUnwrappedOptional.swift",