[Mono-dev] r91443 broke Windows build

[Kornél Pál]

r91443 broke Windows build:
/mono/mono/mono/metadata/threads.c:2526: undefined reference to 
`__wapi_thread_signal_self'
/mono/mono/mono/metadata/threads.c:2543: undefined reference to 
`__wapi_thread_signal_self'

http://lists.ximian.com/pipermail/mono-patches/2007-December/106312.html

I don't know whether this code is required on Windows but 
__wapi_thread_signal_self shoul not be used on Windows as it is an io-layer 
helper function.

Kornél