Clean up INI handling

[NattyNarwhal]

• Convert 0/1 only options to bools
• Make integer options have proper constants, use those in documentation
• Make some options no longer i specific if they work everywhere (i.e. log verbose)
  • Some are i specific but can be useful if connecting from LUW, identify what works in LUW to i
  • Rename when applicable, can we still check for back-compat?
• Rename some confusing options (i.e. ignore user ID actually runs Db2 server job in-process)