SERVER-13799 Increase timeout waiting for user to replicate in sharding/auth.js test
SERVER-13091 fix oplog_entries_from_updates.js to use 2.6 instead of latest
SERVER-10178 Improve debugging output in shell.
SERVER-13686 Do not change the variant directory based on the JS engine being compiled.

Having the variant directory contain the JS engine name can actually increase
the time required to switch JS engines, because the only code that must compile
when you switch is the new JS engine and a small handful of support files.
SERVER-13704 write commands handles ClockSkewException differently from legacy writes
SERVER-13587 ndeleted in system.profile documents reports 1 too few documents removed
SERVER-13040 Fix use of uninitialized value in storageDetails command.
SERVER-13724 Add --disable-warnings-as-errors scons option

This change was prompted by attempts to build 2.6.0 in SLES 10 with
its system gcc version 4.1.2. It builds fine other than a sole
warning - src/third_party/boost/boost/thread/detail/thread.hpp:316:
warning: type attributes are honored only at type definition. It
should also help in cases where compilers are too new.
SERVER-13769 geo_distinct.js: rewrite, add test cases
SERVER-13769 QueryPlanner::plan() has to clear tags from query tree
Merge remote-tracking branch 'upstream/master'