This will make windows app that use that property work on *nix.
	Fixes bug #643475.

do not try to find manage frames when stepping out from either, last managed frame or frame in between managed/native ones (fix case #573949)

added bit field on MonoClass to indicate if the class has an IntPtr pointing to a native class that needs AssetGarbageCollection scanning

Conflicts:
	msvc/mono.def
	unity/unity_liveness.c

On my (cursed?) MacBook Pro, calling
System.Net.NetworkInformation.NetworkInterface.GetAllNetworkInterfaces()
results in an exception:

	System.ArgumentException: length
		at System.Array.Copy (System.Array sourceArray, Int32 sourceIndex, System.Array destinationArray, Int32 destinationIndex, Int32 length) [0x00000] in <filename unknown>:0
		at System.Net.NetworkInformation.MacOsNetworkInterface.ImplGetAllNetworkInterfaces () [0x00000] in <filename unknown>:0
		at System.Net.NetworkInformation.NetworkInterface.GetAllNetworkInterfaces () [0x00000] in <filename unknown>:0

Some printfs later, and we see why:

	Array.Copy(array.Length=12, 3, array.Length=0, 0, 0)
	Array.Copy(array.Length=12, 4, array.Length=0, 0, 0)
	Array.Copy(array.Length=12, 4, array.Length=0, 0, 0)
	Array.Copy(array.Length=12, 3, array.Length=6, 0, 6)
	Array.Copy(array.Length=12, 3, array.Length=6, 0, 6)
	Array.Copy(array.Length=12, 3, array.Length=8, 0, 4)
	Array.Copy(array.Length=12, 4, array.Length=6, 0, 6)
	Array.Copy(array.Length=12, 8, array.Length=6, 0, 6)
	# BOOM!

(Apparently I have 8 interfaces: lo0, gif0, stf0, en0, en1, fw0, p2p0,
and vboxnet0.)

The problem is readily obvious: we're trying to read 6 bytes of data
when only 4 are available, and Array.Copy() complains appropriately.

The fix -- which looks to almost contradict a02076ba -- is to use
`sockaddrdl.sdl_data.Length - sockaddrdl.sdl_nlen` instead of
`sockaddrdl.sdl_data.Length - macAddress.Length` (or sdl_alen).
sdl_nlen is the offset into the source sockaddrdl.sdl_data array, and
in this case sockaddrdl.sdl_alen (the length of the destination
macAddress) isn't the same as sockaddrdl.sdl_nlen, hence the breakage.

Conflicts:
	mcs/class/System/System.Net.NetworkInformation/NetworkInterface.cs

Fix iOS crosscompiler crash on Windows when --debug is specified.

By wrapping sigaction we make sure to always install a signal handler compiled for thumb.
The source code for the signal handler can be found here:
https://github.com/Unity-Technologies/krait-signal-handler

Fix iOS crosscompilation issues on Windows.

Fix ARM IMT calls on AOT platform. ARM AOT implementation of imt_thunks supports only linear array/list of IMT items

Add unity function to clear domain specific fields from thread object, as they may hold objects from an unloaded domain.

Verify that an image does not contain native code when loading if USE_COREE is not defined. Raises nice exception when loading rather than crashing due to random reasons later on. Fixes case #565179.

This week's Mono fixes

Implement GC_thread_unregister_foreign for pthread based platforms. Call it from mono_gc_unregister_thread.

to guard, in particular, mono_jit_info_table_find (which is called
from thread interrupt handlers).

This week's Mono fixes

Check for special statics at beginning of loop. Avoid traversing thread static or context static variables as roots. Fixes case #555954.

Weekly Mono Fixes

Disable dynamic loading on iOS and OSX (when DARWIN is defined). We don't need it, and it registers a callback with _dyld_register_func_for_add_image and _dyld_register_func_for_remove_image which crash if mono dylib gets unloaded in webplayer.

Case 547363.