use java.lang.StackWalker if possible

[xuwei-k]

I think threre are some benefits.

scalikejdbc/scalikejdbc-core/src/main/scala/scalikejdbc/StatementExecutor.scala

Lines 354 to 376 in ff3acfb

	private[this] def stackTraceInformation: String = {
	val loggingSQLAndTime =
	settingsProvider.loggingSQLAndTime(GlobalSettings.loggingSQLAndTime)
	val stackTrace = Thread.currentThread.getStackTrace
	val lines = (if (loggingSQLAndTime.printUnprocessedStackTrace) {
	stackTrace.tail
	} else {
	stackTrace.dropWhile { trace =>
	val className = trace.getClassName
	className != getClass.toString &&
	(className.startsWith("java.lang.") || className
	.startsWith("scalikejdbc."))
	}
	}).take(loggingSQLAndTime.stackTraceDepth).map { trace =>
	" " + trace.toString
	}
	" [Stack Trace]" + eol +
	" ..." + eol +
	lines.mkString(eol) + eol +
	" ..." + eol
	}

• Fixes #2720: Use StackWalker on Java 9+ to create Locations mockito/mockito#2723