[System.Reflection] CoreFX import for set of simple types. (#9693)

Part of #9660.

The imported CoreFX types:
- AmbiguousMatchException
- AssemblyAlgorithmIdAttribute
- AssemblyCompanyAttribute
- AssemblyConfigurationAttribute
- AssemblyConfigurationAttribute
- AssemblyContentType
- AssemblyCopyrightAttribute
- AssemblyCultureAttribute
- AssemblyDefaultAliasAttribute
- AssemblyDelaySignAttribute
- AssemblyDescriptionAttribute
- AssemblyFileVersionAttribute
- AssemblyFlagsAttribute
- AssemblyInformationalVersionAttribute
- AssemblyKeyFileAttribute
- AssemblyKeyNameAttribute
- AssemblyMetadataAttribute
- AssemblyNameFlags
- AssemblyProductAttribute
- AssemblySignatureKeyAttribute
- AssemblyTitleAttribute
- AssemblyTrademarkAttribute
- AssemblyTrademarkAttribute
- AssemblyVersionAttribute
- BindingFlags
- CallingConventions
- CustomAttributeFormatException
- DefaultMemberAttribute
- EventAttributes
- FieldAttributes
- GenericParameterAttributes
- ICustomAttributeProvider
- ImageFileMachine
- InterfaceMapping
- IntrospectionExtensions
- InvalidFilterCriteriaException
- IReflect
- IReflectableType
- MemberFilter
- MemberTypes
- MethodAttributes
- MethodImplAttributes
- ObfuscateAssemblyAttribute
- ObfuscationAttribute
- ParameterAttributes
- ParameterModifier
- PortableExecutableKinds
- ProcessorArchitecture
- PropertyAttributes
- ReflectionContext
- ReflectionTypeLoadException
- ResourceAttributes
- TargetException
- TargetInvocationException
- TargetParameterCountException
- TypeAttributes
- TypeFilter

2 files changed, 0 insertions, 0 deletions

diff --git a/external/api-snapshot b/external/api-snapshot
-Subproject 7732747584ef4a0a407f62aff1eb868b08161c0
+Subproject ce5f027d63f64b1b8b4e2dfd145107fa2df4782
diff --git a/external/corefx b/external/corefx
-Subproject 577b6a73341b11fa79484bc6bceb2cb4ca2acb9
+Subproject fe3e1548a68fd9399e8b2a0bbd01f3140016925