[FIXED JENKINS-20086] Allow disabling use of default exclude patterns (.git, .svn, etc.)
Added a convenience method.

Reference: https://trello.com/c/doFFMdUm/46-filepath-getcomputer
[FIXED JENKINS-21716] Set Content-Type header for env-vars.html
Merge pull request #1287 from nithril/master

[FIXED JENKINS-20086] Allow disabling use of default exclude patterns (.git, .svn, etc.)
Noting #1287

Signed-off-by: Oleg Nenashev <o.v.nenashev@gmail.com>
Merge pull request #1302 from daniel-beck/JENKINS-21716

[FIXED JENKINS-21716] Set Content-Type header for env-vars.html
[maven-release-plugin] prepare release jenkins-1.570
[maven-release-plugin] prepare for next development iteration
updated changelog for release
updated changelog as a part of the release
merged back the RC branch
creating an RC branch
the trunk is toward 1.572-SNAPSHOT
Jenkins core does not automatically call Descriptor.load(), so JenkinsRule should not do so either.
Reverts 66528e4 so as to make test cases more faithful to real behavior.
Fix documentation.
Merge pull request #1305 from KostyaSha/fix2

Fix documentation.
[JENKINS-22529] Make sure 'e' doesn't go out of bounds

This fixes a race that would lead to the node being marked as Dead with
the following backtrace (1.509.4):

java.lang.IndexOutOfBoundsException: Index: 62, Size: 62
at java.util.ArrayList.rangeCheck(ArrayList.java:635)
at java.util.ArrayList.get(ArrayList.java:411)
at hudson.model.queue.MappingWorksheet$ReadOnlyList.get(MappingWorksheet.java:102)
at hudson.model.queue.MappingWorksheet$ExecutorChunk.execute(MappingWorksheet.java:150)
at hudson.model.queue.MappingWorksheet$ExecutorChunk.access$000(MappingWorksheet.java:110)
at hudson.model.queue.MappingWorksheet$Mapping.execute(MappingWorksheet.java:298)
at hudson.model.Queue.maintain(Queue.java:1048)
at hudson.model.Queue.pop(Queue.java:866)
at hudson.model.Executor.grabJob(Executor.java:285)
at hudson.model.Executor.run(Executor.java:206)