emacs tweaks
lower required mem for some py tests

Still fails on my windows, somebody is *forcing* a 32-bit JVM, as it;s
not on any obvious path - i only get 64bit JVMs from all shells, and
only 32-bit JVM when launched via python Popen.
Turn back on DRFtests, turned off by mistake
Fix debug printing for regression trees
Get explicit about max upper-bounds

being either Inclusive or Exclusive.  It's gathered Inclusive during
scoring, but used Exclusive when defining bin boundaries.
Merge branch 'master' of github.com:0xdata/h2o
Hunt down & kill a race with min/max