Hi, please review this j.u.regex.Pattern cleanup.
- refactor BitClass to be a BmpCharPredicate (which allows removing two identical(!) lambdas), which improves startup and reduces allocations when compiling Patterns. - remove unused GroupRef class - made anonymous lookbehindEnd Node instance into an explicit class which will be lazily rather than eagerly loaded - various cleanups of unused variables, methods and redundant inititialization Webrev: http://cr.openjdk.java.net/~redestad/8225179/open.00/ Bug: https://bugs.openjdk.java.net/browse/JDK-8225179 Testing: tier1-3 Thanks! /Claes
