[PATCH]: Thread safe stdio update

[Thomas Pfaff]

This is an update of my previous patch. It will add support for thread 
safe stdio by adding 3 new header files in include/sys which supersedes 
newlib headers.

One of these (_types.h) is just a copy of newlibs _types.h with a 
modified _lock_t. It is not strictly necessary since sizeof(int) == 
sizeof(void*).

2004-01-19  Thomas Pfaff  <tpfaff@gmx.net>

	* include/sys/_types.h: New file.
	* include/sys/lock.h: Ditto.
	* include/sys/stdio.h: Ditto.
	* thread.cc: Include sys/lock.h
	(__cygwin_lock_init_recursive): New function.
	(__cygwin_lock_fini_recursive): Ditto.
	(__cygwin_lock_lock_recursive): Ditto.
	(__cygwin_lock_unlock_recursive): Ditto.



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