GNU Go 3.7.4

GNU Go 3.7.4 is now available at:

http://www.gnu.org/software/gnugo/devel.html

Patches in this release:

* gunnar_7_4.5. Code maintenance.
* copyright_7_4.1. Updated copyright notices.
* gunnar_7_4.4. Bugfix in liberty filling code.
* gunnar_7_4.3. Tuning.
* teun_7_4.1. Documentation bugfix.
* evan_7_4.4. Bug-fix for dragon_status GTP command.
* gunnar_7_4.2. Tuning.
* paul_7_4.7. Doc maintenance: properly capitalize `GNU Go' and other acronyms.
* paul_7_4.6. Make fast_defense() aware of under-the-stones tesuji.
* paul_7_4.5. Make superstring_break_chain_moves() attack 3-liberty chains.
* paul_7_4.4. Optics tuning.
* paul_7_4.3. Owl tuning.
* paul_7_4.2. Atari-atari tuning.
* paul_7_4.1. Tiny improvements for `view.pike'.
* arend_7_4.3. Remove unused code in make_dragons().
* gunnar_7_4.1. Many new testcases.
* evan_7_4.1. 9x9 testcases playing against GoFigure.
* arend_7_4.2. Fix two kgs tests.
* bertram_7_4.1. Fix crash with --score estimate.
* arend_7_4.1. Valgrind fixes.

Dan