gcc-6 (6.2.1-4) unstable; urgency=medium
* Update to SVN
20161119 (r242621, 6.2.1) from the gcc-6-branch.
- Fix PR c++/67631.
* Build the GC enabled libobjc using the system libgc when available
* Always apply *all* the gnat patches whether or not gnat is built.
* Bump debhelper compat level to 9.
* Mark libgphobos symbols changing with the file location (sic!) as optional.
[dgit import package gcc-6 6.2.1-4]