upgrade guava to v13.0
switch log4j to logback
switched logback history to 2 days
switched logback max history to 7 days
removed log4j reminant in code
remove log4j references. change logging policy, 1GB max logs.
upgrade to leiningen 2
corrections on bin/to_maven.sh
storm-lib now has log4j dependency instead of logback. This will be more user-friendly.
Merge branch 'master' of github.com:nathanmarz/storm into logback3

Conflicts:
	project.clj
Merge branch 'master' into logback3

Conflicts:
	project.clj
renamed .log extension
merge
merge conflict
fix conflict
update gitignore
Merge branch 'master' into 0.9.0
fix merge conflicts
revamp trident spout and partitioned trident spouts to support spouts where the source can change
added refreshPartitions method for managing connections