Log Message:
gssdp: update to 1.0.2.

1.0.2
=====
- Small documentation fixes
- Fix deprecation warning with GTK+-3.22

All contributors to this release:
 - Jens Georg <mail@jensge.org>

1.0.1
=====

- Fix some compiler/c89 issues with recent mingw
- Use proper ssize_t modifier in printf
- Make documentation point to itself by declaring it stable
- Use correct FSF address in documentation text

All contributors to this release:
 - Jens Georg <mail@jensge.org>