* gendef: Add missing setjmp/longjmp functionality, still untested.
	* heap.cc (eval_start_address): Change address and comment for 64 bit.
	(eval_initial_heap_size): Change return type to SIZE_T.  Use different
	values for 64 bit.
	* Makefile.in (TEST_DLL_NAME): Fix to use correct name per target.
	* gendef (fefunc): Resurrect accidentally dropped 32 bit code.
	* cygwin.sc.in: Fix ctors and dtors filler and zero-terminator for
	64 bit.
	* libc/ctype/ctype_.c (_ctype_): Fix definition for 64 bit Cygwin.
	* winbase.h (ilockcmpexch): Define always.
	(InterlockedCompareExchange): Ditto.
	(ilockcmpexch64): Define for x86_64.
	(InterlockedCompareExchange64): Ditto.
	(InterlockedCompareExchangePointer): Define in terms of
	InterlockedCompareExchange64 on x86_64.
Add missing patch
	* libc/include/machine/setjmp.h: Fix definition of _JBTYPE and _JBLEN
	for 64 bit Cygwin to enforce 16 byte alignment.  Change comment to
	explain.
	* cygtls.h (_tlsbase): Temporary workaround for GCC bug.
	(_tlsbase): Ditto.
	* cygwin64.din: Set BASE temporariliy to address < 32 bit to workaround
	GDB bug.
	* dcrt0.cc (child_info_fork::alloc_stack): Temporary workaround for GCC
	bug.
	(dll_crt0_1): Ditto.
	* miscfuncs.cc (memset): Temporary workaround missing MSABI function in
	newlib.
	(memcpy): Ditto.
	* include/cygwin/config.h (__getreent): Drop definition for x86_64 to
	workaround GCC bug.
Update copyrights
Pull in changes from HEAD
	* cygtls.h: Cleanup x86_64 related comment.
	(_tlsbase): Change return type to PVOID.
	(_tlstop): Ditto.
	(_my_tls): Accommodate above change.
	* dcrt0.cc (child_info_fork::alloc_stack): Revert previous patch, but
	keep cast to PVOID.
	(dll_crt0_1): Ditto.
	* exception.h: Define _exception_list as _EXCEPTION_REGISTRATION_RECORD
	on x86_64.
	(_except_list): Define in terms of NtCurrentTeb() on x86_64.
	* miscfuncs.cc (__import_address): Handle 32 bit absolute addressing
	in IAT on x86_64.
	* include/cygwin/config.h (___getreent): New inline function on
	x86_64.  Define __getreent in terms of ___getreent on x86_64.  Fix
	comment accordingly.
...and pull in changes from HEAD