* exceptions.cc (_cygtls::signal_debugger): Raise size of sigmsg buffer
	on x86_64.
	* tlsoffsets64.h: Regenerate.
	* pseudo-reloc.cc (do_pseudo_reloc): Add test to check for invalid 32
	bit relocation in 64 bit code.  Only test when building without
	optimization.
Merge branch 'cygwin64' into msys2-64-dev