2009-10-17 Ivan Maidanski <ivmai@mail.ru>

2009-10-17  Ivan Maidanski <ivmai@mail.ru>

	* gc_dlopen.c (GC_MUST_RESTORE_REDEFINED_DLOPEN): Define if dlopen
	redirection is turned off; turn it on later when dlopen real
	symbol is no longer needed (according to the comment and the same
	as in dyn_load.c).
	* gc_dlopen.c (WRAP_FUNC, REAL_FUNC): Rename to WRAP_DLFUNC and
	REAL_DLFUNC, respectively (to have unique names since the
	definitions may differ from that of the similar ones in
	pthread_support.c).
	* mark.c (source): Undefine the macro when no longer needed.
	* os_dep.c (handler): Rename the type to GC_fault_handler_t (to
	have the unique name across the project).
	* os_dep.c (STAT_BUF_SIZE, STAT_READ); Guard with ifndef; add the
	comment.
	* pthread_support.c (STAT_BUF_SIZE, STAT_READ): Ditto.
	* os_dep.c (sbrk): Undo sbrk() redirection (for ECOS) when no
	longer needed.