(ScriptEngine) Initialize default output and error writers
(PyScriptEngine) eval and evalFile do not have to throw exceptions
(PyScriptEngine) flush the error writer

... so that the exceptions are properly written
(ScriptEngine) Rename 'eval' to 'exec' since nothing is evaluated, strictly speaking

(I would expect 'eval' to return something)
(ScriptEngine) Rename 'evalFile' to 'execFile' since nothing is evaluated, strictly speaking

(I would expect 'eval' to return something)
Revert "(PyScriptEngine) Load the site module automatically"

This reverts commit a14100bdfb2ce9a7ac18d5bc91b9d99a384218bf.
This operation is now done in the Jython implementation directly
Revert the import of site in PythonScriptingConsole

Now done automatically in the Jython implementation.
Remove the call to JythonLibsManager to extract the Python scripts.

Now done in the Python Extractor plugin, which is independant of the
Script-Editor (allows uses of Python outside the Script-Editor !)
Remove unused import
Revert "(ScriptEngine) Rename 'evalFile' to 'execFile' since nothing is evaluated, strictly speaking"

This reverts commit 5f902ed38956f4b9c0892a6597ac8111499ef1f2.

I know understand that this corresponds to JSR 223.
Revert "(ScriptEngine) Rename 'eval' to 'exec' since nothing is evaluated, strictly speaking"

This reverts commit 3afca6dc094fe91da592579ea78aa970745ac09c.

I know understand that it corresponds to JSR 223.
Fix PermGenSpace leak by removing references to engines in ScriptEngineHandler
Call PythonInterpreter.cleanup() to let Jython do its housekeeping
Do not force the garbage collection when removing engines.

Now that the PermGenSpace leak is fixed, the memory is PermGenSpace
will be properly reclaimed when needed.
Remove obsolete comments in PyScriptEngine
Remove the setting of python.home in PyScriptEngine

Jython has an automatic way to do it based on the location
of its .class files. Moreover, the code was not working properly.
(PythonScriptingHandler) Fix parsing of python scripts with explicit encoding
Merge pull request #20 from tlecomte/master

Improvements to ScriptEngine