BS-113, add properity to define UserTransaction
SHandler now implements Serializable.

All implementations of SHandler have been refactored to be serializable.
[ENGINE RELEASE] Created the release 6.1.0-rc-11
[ENGINE RELEASE] Created the release 6.1.0-SNAPSHOT
Add comment.
Re-add bag remove in throw exception
regenerate bonita-synchro-register
define the right classloader hierarchy: process -> tenant -> global
Merge branch 'CoreProduct' of https://souillac@github.com/bonitasoft/bonita-engine.git into CoreProduct
add a parent to ParentRedirectClassLoader
refactor singleton to ease use by bos-performance project
Now log FireEventException 's, if any
include bonita-synchro-register in build
rename fields to ease readability of the class
merge branch 'master' into CoreProduct
[ENGINE RELEASE] Created the release 6.1.0-rc-02
[ENGINE RELEASE] Created the release 6.1.0-SNAPSHOT
[ENGINE RELEASE] Created the release 6.1.0-rc-12
[ENGINE RELEASE] Created the release 6.1.0-SNAPSHOT
add bonitaSerializable interface + fix classloader issue