P6LogOptions: for exclude/include and sqlexpression we compile Pattern eagerly => to improve performance; tests for these added; fixed #78
Merge pull request #115 from p6spy/pb_unstable

P6LogOptions: for exclude/include and sqlexpression performance improvements
ignore null values when setting options
filtering should not be used to determine is category is okay
initialize P6LogQuery after P6ModuleManager
Merge remote-tracking branch 'upstream/master'