SABlastPlus tests fail with latest version of BLAST+

[cjfields]

On master branch:

16:59 $ ./Build test --test-files t/SABlastPlus.t
t/SABlastPlus.t .. 1/73 # DB and mask make tests

------------- EXCEPTION: Bio::Root::Exception -------------
MSG: Unknown version output: blastdbcmd: 2.6.0+
 Package: blast 2.6.0, build Dec  7 2016 15:12:09

STACK: Error::throw
STACK: Bio::Root::Root::throw /Users/cjfields/bioperl/bioperl-live/Bio/Root/Root.pm:447
STACK: Bio::Tools::Run::BlastPlus::_version /Users/cjfields/bioperl/bioperl-run/blib/lib/Bio/Tools/Run/BlastPlus.pm:158
STACK: Bio::Tools::Run::BlastPlus::program_version /Users/cjfields/bioperl/bioperl-run/blib/lib/Bio/Tools/Run/BlastPlus.pm:128
STACK: Bio::Tools::Run::StandAloneBlastPlus::program_version /Users/cjfields/bioperl/bioperl-run/blib/lib/Bio/Tools/Run/StandAloneBlastPlus.pm:691
STACK: t/SABlastPlus.t:45
-----------------------------------------------------------
# Looks like your test exited with 29 just after 9.
t/SABlastPlus.t .. Dubious, test returned 29 (wstat 7424, 0x1d00)
Failed 64/73 subtests

Test Summary Report
-------------------
t/SABlastPlus.t (Wstat: 7424 Tests: 9 Failed: 0)
  Non-zero exit status: 29
  Parse errors: Bad plan.  You planned 73 tests but ran 9.
Files=1, Tests=9,  0 wallclock secs ( 0.02 usr  0.01 sys +  0.21 cusr  0.05 csys =  0.29 CPU)
Result: FAIL
Failed 1/1 test programs. 0/9 subtests failed.