scala/scala — pull request #394 by odersky (2012-04-14 00:40:37+00:00)
Title: Topic/sip18

Here's the implementation of SIP 18, together with changes how macros are enabled (no more -Xmacros), and deprecation of `then` and `macro` identifiers. There are also some improvements how types with wildcard args are printed: we can now print Tuple2[_, String], where before we needed an explicit existential.