Test: ClusterServiceTests.testLocalNodeMasterListenerCallbacks - increase ping timeout

was 200ms, now 400ms
Docs: Typos on range filter

Closes #7713
Core: upgrade to Lucene 4.10.1 snapshot
Docs: Update thrift.asciidoc

Fix typos, add clarifications and link.

Closes #7678
Docs: Update update.asciidoc

Closes #7498
Update upgrade.asciidoc

Fix markup bug and change "deb" to "dpkg". (Package manager called dpkg, not deb in Debian distribution)

Closes #7748
Docs: Mention that that p/c queries and filters do not work in the delete-by-query api.
[TEST] add regular scroll REST test

Closes #7860
Add a listener thread pool
Today, when executing an action (mainly when using the Java API), a listener threaded flag can be set to true in order to execute the listener on a different thread pool. Today, this thread pool is the generic thread pool, which is cached. This can create problems for Java clients (mainly) around potential thread explosion.
Introduce a new thread pool called listener, that is fixed sized and defaults to the half the cores maxed at 10, and use it where listeners are executed.
relates to #5152
closes #7837
[TEST] improved regular scroll REST test

The intermediate document that gets indexed has now a non existing id, and we make sure it doesn't get returned.
[TEST] improved regular scroll REST test

Added sort clause by field and checked docs returned each time
Update getting-started.asciidoc

zip and tar is archive, deb and rpm is package.

Closes #7749
Update indices.get_mapping.json
Docs: In the code there is the `d` option.

Documenting a behaviour that is present in the code and works.

Closes #7794
Docs: bad text wrapping

On the page http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/analysis-synonym-tokenfilter.html

even on a huge monitor the text is being wrapped the next way
```
mapping:
ipod, i-pod, i pod => ipod, i-pod, i pod
mapping:
ipod, i-pod, i pod => ipod
```

So one can think that "mapping:" is not in comment and is a part of syntax. But the lines are less than 80 chars, so perhaps the problem is in the page layout and there may be some other pages in the reference where the text is also being wrapped in an undesirable way.

Closes #7739
Update stemmer-tokenfilter.asciidoc

Change the `minimal_english` link to a publicly accessible URL
Fix NumberFormatException in Simple Query String Query

Incorrect usage of XContentParser.hasTextCharacters() can result in NumberFormatException as well as other possible issues in template query parser and phrase suggest parsers.

Fixes #7875
script with _score: remove dependency of DocLookup and scorer

As pointed out in #7487 DocLookup is a variable that is accessible by all scripts
for one doc while the query is executed. But the _score and therfore the scorer
depends on the current context, that is, which part of query is currently executed.
Instead of setting the scorer for DocLookup
and have Script access the DocLookup for getting the score, the Scorer should just
be explicitely set for each script.
DocLookup should not have any reference to a scorer.
This was similarly discussed in #7043.

This dependency caused a stackoverflow when running script score in combination with an
aggregation on _score. Also the wrong scorer was called when nesting several script scores.

closes #7487
closes #7819
field name lookup: return List instead of Set for names matching a pattern

The returned sets are only used for iterating. Therefore we might
as well return a list since this guaratees order.

This is the same effect as in
https://github.com/elasticsearch/elasticsearch/pull/7698
The test SimpleIndexQueryParserTests#testQueryStringFieldsMatch
failed on openjdk 1.7.0_65 with
<jdk.map.althashing.threshold>0</jdk.map.althashing.threshold>

closes #7709
Discovery: remove any local state and use clusterService.state instead

At the moment, ZenDiscovery contains a local copy of the disco nodes plus a flag that indicates whether the local node is master or not. This is redundant as the same information is stored in the cluster state. Have duplicate copy can lead to unneeded concurrency issues. This PR removes the duplication, including moving the ownership of the localNode creation to ClusterState

The PR introduces a tighter control of the background joining thread to make sure it is started and stopped together with any cluster state changes. This solves potentially concurrency bugs where a joining thread may fail to start.

Last we add a couple of safety checks to make sure that if a nodes receives a cluster state from a new master while actively trying to join another one (or electing itself) we go back to pinging to actively join it.

Closes #7834