Reworked annotation system. Added tenacity and permissibility

Conflicts:
	src/main/scala/firrtl/Compiler.scala
	src/main/scala/firrtl/LoweringCompilers.scala
	src/main/scala/firrtl/passes/Inline.scala
	src/test/scala/firrtlTests/AnnotationTests.scala
	src/test/scala/firrtlTests/InlineInstancesTests.scala