Upgrade Logging facility (#488)

* Upgrade Logging facility
Make thread-safe
Make logging by package name work
Use caching of class names to level for performance
Make some tests to show this working

* quick fix for dynamic logging variable

* A number of changes based on Adam's suggestions
Default LoggerState
But there is an invoke method now to handle threading issues.  This should be propagated to other
projects Driver.execute methods

* Add built-in support for string capture of Logging

* Usability fixes for logging stuff.  Settings made to the logger prior to execute/invoke will be passed along if possible.

* A couple style fixes
Comment and privatize Logger state

* Name and save string buffers used for logging

* Fix default logging state setting
Fix logging test, did not have change to command argument

* comment out logging in InlineInstanceTests

* Changed invoke to makeScope
Nested makeScopes share same state object
Removed earlier named string buffer implementation

* Better name for captor get data

* Add trace tests to make sure it works too

* Fix call into logger settings

1 files changed, 6 insertions, 13 deletions

diff --git a/src/test/scala/firrtlTests/InlineInstancesTests.scala b/src/test/scala/firrtlTests/InlineInstancesTests.scala
index a3b7386d..9e8f8054 100644
--- a/src/test/scala/firrtlTests/InlineInstancesTests.scala
+++ b/src/test/scala/firrtlTests/InlineInstancesTests.scala
@@ -5,19 +5,12 @@ package firrtlTests
 import org.scalatest.FlatSpec
 import org.scalatest.Matchers
 import org.scalatest.junit.JUnitRunner
-
 import firrtl.ir.Circuit
-import firrtl.{Parser, AnnotationMap}
+import firrtl.{AnnotationMap, Parser}
 import firrtl.passes.PassExceptions
-import firrtl.annotations.{
-   Named,
-   CircuitName,
-   ModuleName,
-   ComponentName,
-   Annotation
-}
-import firrtl.passes.{InlineInstances, InlineAnnotation}
-import logger.Logger
+import firrtl.annotations.{Annotation, CircuitName, ComponentName, ModuleName, Named}
+import firrtl.passes.{InlineAnnotation, InlineInstances}
+import logger.{LogLevel, Logger}
 import logger.LogLevel.Debug
 
 
@@ -26,8 +19,8 @@ import logger.LogLevel.Debug
  */
 class InlineInstancesTests extends LowTransformSpec {
    def transform = new InlineInstances
-   // Set this to debug
-   // Logger.setClassLogLevels(Map(this.getClass.getName -> Debug))
+   // Set this to debug, this will apply to all tests
+   // Logger.setLevel(this.getClass, Debug)
    "The module Inline" should "be inlined" in {
       val input =
          """circuit Top :