Merge branch 'agr/start_procedure'
* agr/start_procedure:
improve application path detection: follow symbolic link
replace subprocess wait by communicate
fix bug in salome connect
[minor] changes in information messages
file locks for windows platform
fix bug when parsing duplicate files and/or items
unit tests for concurrent sessions
exception raised if given script is not found
make unit test runnable with python 2.6
fix bug in log file comparison
search scripts given as command line args in sys path
change in API methods
rename salome runner/launcher as salome context
