Updated Titan configs used in Expect-based ITs
Remove {mapred,core}-site.xml from <ziproot>/conf

Following a suggestion from Daniel, I've removed the core-site.xml and
mapred-site.xml files with comments and a couple of stub config
values.  Users who already have Hadoop installed have likely already
customized their mapred-site.xml and core-site.xml under their
$HADOOP_PREFIX or $HADOOP_HOME.  Putting copies of these in conf just
raises the potential to silently mask the user's preferred mapred- or
core-site.xml with some almost-empty defaults from Titan.

gremlin.sh has also been updated to look for both Hadoop 1 and Hadoop
2 config file directories instead of just Hadoop 1 config file
directories.
Fix ES version tested with 0.5.0 in changelog
Update version compat matrix in asciidocs
Update reindex.txt

Corrected documentation for reindex
More info in index repair validator error messages
Add slf4j log statements around type state changes
Reduce log volume from CassandraTransaction

It now logs its read and write consistency levels on construction
instead of every time it carries out an I/O operation
Customize CassandraTransaction toString
Reword some debug logging statements
Push some DEBUG logging msgs down to TRACE
Reindex documentation updates
Push sleep duration log messages down to TRACE
Fix admonition block tag in reindex docs
Reformat wide code blocks in reindex.txt

This reformatting should avoid horizontal scrollbars on most displays
Fix command substitution bug in checksocket.sh
Additional addVertexWithLabel doc and refactoring

* Created addVertexWithLabel(VertexLabel) in TitanGraph for symmetry
  with TitanTransaction

* Updated labeled addVertex calls in the docs

* Updated the section in docs/titanbasics.txt that specifically covers
  vertex labels and their creation

* Updated javadoc for addVertexWithLabel methods in both TitanGraph
  and TitanTransaction
Merge branch 'titan05' of github.com:thinkaurelius/titan into titan05