v0.8.1

• [#442] fix unittest fail under 32-bit system.
• [#439] try to fix compile problem under Hurd.
• [#447] fix bug: use defined icon no longer works.
• [#422] fix bug: request shared resource no longer works.
• [#441] use GtkHeaderBar under Linux.
• [#462] when recv file, if file exist, save to foo (1).ext (was 1_foo.ext).
• Translation updated
  • Simplified Chinese
  • Russian - Thanks to @KovalevArtem