Scala 2.10.4-RC2

For announcement on Tuesday.
2.11.0-M8
Merge pull request #160 from adriaanm/2.11.0-M8

2.11.0-M8
2.10.4-RC2, slipped a week.
Merge pull request #156 from retronym/release/2.10.4-RC2

Scala 2.10.4-RC2
Fix release date of 2.10.4-RC2 news item
Merge pull request #161 from retronym/release/2.10.4-RC2-2

Fix release date of 2.10.4-RC2 news item