Lint.
Lint
Lint
Fix a trivial leak in the utility.
clang lint:
* log.c: The left operand of '<' is a garbage value.
* txn_ckpt.c: Branch condition evaluates to a garbage value.
* txn_ckpt.c: Value stored to 'dhandle' is never read.
* log.c: Value stored to 'locked' is never read.
Coverity detected a copy-paste error.
Fix a memory leak on error in "wt load".
lint: Remove NULL checks when a non-NULL pointer is required.
Clear WT_PACK_VALUE before calling __pack_next.  Static analysis can't figure out that it isn't required.
Pedantic lint: don't return a void expression.
Fix an assertion: we must have a buffer if we aren't skipping.
Get rid of CONFIG.phase and CONFIG.phase_start_time, they're no
longer used for anything.
random_range is a boolean, not a uint32
minor re-wording, hopefully for clarification
Add support for running a specific number of workload operations instead
of running for a specific period of time, based on new configuration
string run_ops.  API change is that both run_time and run_ops default to
0, and one must be specified.

Convert sample output to ops/second, not ops/sample-interval.

Increase the size of the png window.

A couple of minor bug fixes to avoid possible thread races.
Merge branch 'develop' into wtperf-745
Clarify a little, you have to specify one of run_time and run_ops.