https://bz.apache.org/bugzilla/show_bug.cgi?id=60968

https://bz.apache.org/bugzilla/show_bug.cgi?id=60665

https://bz.apache.org/bugzilla/show_bug.cgi?id=60767

JavaxScriptRunner:
- Better compiled script reference name to avoid reference name
  collision, project wide : execName + ".compiled." +
  getScript().hashCode() + "." + getProject().hashCode();

ScriptDef:
- Fixed Javadoc + use of 3rd person
  [(oracle style
guideline)](http://www.oracle.com/technetwork/articles/java/index-137868.html#styleguide)

Task manual: documentation for `encoding` and `compiled` options.
- `encoding` : script.html, scriptdef.html, conditions.html,
   selectors.html, mapper.html, filterchain.html
- `compiled` : scriptdef.html

Added source file `encoding` option on:
- org.apache.tools.ant.taskdefs.optional.Script
- org.apache.tools.ant.types.optional.AbstractScriptComponent
  (inherited by ScriptCondition, ScriptMapper)
- org.apache.tools.ant.types.optional.ScriptFilter
- org.apache.tools.ant.types.optional.ScriptSelector

Test units :
- org.apache.tools.ant.taskdefs.optional.script.ScriptDefTest,
  script.xml : src + encoding
- org.apache.tools.ant.taskdefs.optional.RhinoScriptDefTest,
  scriptdef.xml : src + encoding, compiled
- new file: src/etc/testcases/taskdefs/optional/script/heavy-script.js

closes #32

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Merge tag 'rel/1.10.1' and bump versions

Tagging version 1.10.1 of Ant

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Merge tag 'rel/1.9.9' into 1.9.x and bump versions

Conflicts:
	ReleaseInstructions

thanks to @ebourg 984a03d1ce