Fix msgpack#145: msgpack-{core,jackson}-0.7.0-M5 release. Fix sbt scr… …ipts to allow multi-module project deployment

Fix multi bytes decoding error at boundary 

Add mitsu to the developer list 

[maven-release-plugin] copy for tag msgpack-0.6.11 

[maven-release-plugin] copy for tag msgpack-0.6.10 

[maven-release-plugin] copy for tag msgpack-0.6.9 

[maven-release-plugin] copy for tag msgpack-0.6.8