Don't pull in old versions of Jackson via hadoop-core
Typos: cluser -> cluster
Merge pull request #560 from ash211/patch-3

Typos: cluser -> cluster
Add details when BlockManager heartbeats time out

Makes it more clear what the threshold was for tuning spark.storage.blockManagerSlaveTimeoutMs

Before:
WARN  "Removing BlockManager BlockManagerId(201304022120-1976232532-5050-27464-0, myhostname, 51337) with no recent heart beats

After:
WARN  "Removing BlockManager BlockManagerId(201304022120-1976232532-5050-27464-0, myhostname, 51337) with no recent heart beats: 19216ms exceeds 15000ms
Fix tests from different projects running in parallel in SBT 0.12
Merge branch 'master' of github.com:mesos/spark
Merge pull request #561 from ash211/patch-4

Add details when BlockManager heartbeats time out
Reversed the order of tests to find a scala executable (in the case when SPARK_LAUNCH_WITH_SCALA is defined): instead of checking in the PATH first, and only then (if not found) for SCALA_HOME, now we check for SCALA_HOME first, and only then (if not defined) do we look in the PATH.  The advantage is that now if the user has a more recent (non-compatible) version of scala in her PATH, she can use SCALA_HOME to point to the older (compatible) version for use with spark.

Suggested by Josh Rosen in this thread:

  https://groups.google.com/forum/?fromgroups=#!topic/spark-users/NC9JKvP8808
Update quick-start.md heading on Operations (not just Transformations).
Merge pull request #565 from andyk/master

Update wording of section on RDD operations in quick start guide in docs
Fix compile error
Merge pull request #564 from maspotts/master

Allow latest scala in PATH, with SCALA_HOME as override (instead of vice-versa)
Merge pull request #558 from ash211/patch-jackson-conflict

Don't pull in old versions of Jackson via hadoop-core