Fix a bug that made LSM insert threads keep cursors open unnecessarily.
Make declarations match prototypes.
Increase the skew against evicting internal pages: some wtperf workloads cause excessive eviction.
refs #829 (etc.)
Eliminate constants.
Eliminate constants in wtperf_stats.py, working version.
Make chunk max 5Gb and turn on snappy compression.
Fix a long-standing bug where a page could be marked clean (and evicted) when it contained uncommitted changes.

refs #835, #818(?), #581
Rollback transactions in connection close as a separate pass before closing all of the sessions.

refs #835
typo, helium_open_o_truncate -> helium_o_truncate
Merge pull request #878 from wiredtiger/evicting-uncommitted

Fix a long-standing bug where a page could be marked clean (and evicted)...
Update the configuration parsing API. Not finalized, but a step closer.
Skip measuring the very first operation to avoid severe latency spike
measurements.
Move latency measurement on populate with multiple tables.
Update the configuration parsing API. Including:

* Don't copy the input string.
* Remove reset and remove complex semantics.
* Rename search back to get.
Add in an example for querying a nested value.
Configuration parser API, update documentation and examples.
Fix example code return value.
Update the configuration string parsing in Helium data source.
Simplify code to always use the cfg->uris array.
Fix warning.