drop support of log formats < 4
authorEvan Martin <martine@danga.com>
Mon, 18 Jun 2012 22:47:38 +0000 (15:47 -0700)
committerEvan Martin <martine@danga.com>
Mon, 18 Jun 2012 22:59:13 +0000 (15:59 -0700)
commit91b986fe22f327df3ed69234f4472d10e5bd883f
tree9e7f74a187002622c114872165034d622ef95d09
parentb77614301e032e19e7cb2b3b5a6dea9464c05a5e
drop support of log formats < 4

Log format 4 was introduced in January.
There's been plenty of time to migrate.
src/build_log.cc
src/build_log_test.cc