6.21 release
6.21 Released 5/14/2015
o Merged in Mika Lindqvist's patch to make the StackWalker code
use less stack space.
o Merged in Mika Linkdqvist's patches for better Cygwin compatibility.
- Made the StackWalker code a bit more robust.
- Merged in Mika Lindqvist's patch to the VC++12 projects
to link debug builds against the MultiThreadedDebug
run time library rather than the MultiThreaded library. - Fixed a couple of const-correctness issues in the StackWalker code.
o Modified the Windows implementation of GetNetworkInterfaceInfos()
to not specify an interface index for IPv6 network device address
::1, as doing so causes UDP-packet-routing problems under Windows 7.