libserialport-0.1.2

Note: This release does NOT change the libserialport API or ABI in
backwards-incompatible ways. Programs using libserialport should
continue to work fine without recompiling or relinking.

• No changes to the API
• Add examples to showcase libserialport usage.
• Fix handling of EAGAIN in sp_nonblocking_write().
• Fix calculation of poll() timeout in sp_wait().
• File descriptors of a serial port on POSIX systems are now opened
  exclusively.
• Refactor timing code and add unit tests.
• Fix building on Cygwin.
• A default baudrate of 9600 is now assumed if the OS does not provide one.
• Linux:
  • Fix buildroot build for ucLinux.
  • Fix build for alpha target.
  • Allow users to use symlinks created by e.g. udev rules.
  • O_CLOEXEC is used where available.
• Windows:
  • Fix a WCHAR-related issue causing crashes in sp_list_ports().
  • Fix a WCHAR-related issue causing crashes in get_root_hub_name().
  • Await completion of previous write before changing config via
    set_config().
  • Use architecture-specific size limit for WriteFile calls.
  • Loop over WriteFile() if write size exceeds limit.
  • Use correct variants of CreateFile() and FormatMessage().
  • Ignore fParity flag which is always 0 after GetCommState().
  • Don't fail if WaitCommEvent was aborted due to thread exit by
    handling ERROR_OPERATION_ABORTED.
• FreeBSD:
  • Add missing libusb-2.0 dependency.
• Android:
  • Fix build for platform 21 and higher.
• Mac OS X:
  • Max class string length is increased to 64, solving device discovery
    issues.

Thanks to all contributors and testers!