Change default verbose back to none.  refs #593
Changed -S -M -L to internally use config strings. refs #593
Defined all options in wtperf_opt.i, included multiple times. refs #593
Use -o {options} when possible, as many wtperf opts are going away.  refs #593
Added a help description to the definition of each option.
Added config_opt_usage() that prints all options/default values/descriptions.
Removed command line options that are available via -o/-O.
refs #593
Reorder options in alphabetical order.
Remove flagval for random, random_range implies this.
refs #593
Remove flagval for random, random_range implies this.
Expand multiline usage messages to format nicely.
refs #593