* gendef (stabilize_sig_stack): Correctly align this pointer for call to

_cygtls::call_signal_handler.
* gentls_offsets: Output sizeof field.
* tlsoffsets.h: Regenerate.

winsup/cygwin/tlsoffsets.h

@@ -1,5 +1,6 @@
 //;# autogenerated:  Do not edit.
 
+//; $tls::sizeof__cygtls = 3744;
 //; $tls::func = -3744;
 //; $tls::pfunc = 0;
 //; $tls::saved_errno = -3740;