commitPathsFromLoader was removed by merge

...plus minor change in boot.js that was also lost.
Native Functions encapsulation
Added 'NativeFunction exists:' method
Merge git://github.com/NicolasPetton/amber
BlockClosure newValue:value:value: error fix
Fixed issue #326 (again, it was lost in a merge)
Merge pull request #336 from herby/lost-in-merging

commitPathsFromLoader was removed by merge
Fixed variable assignment
Fixed issues #334 and #335
Merge pull request #337 from xekoukou/master

Native Function ecapsulation
No .wrapClassName abuse, intention-revealing .addClass.
NativeFunction refactoring
Changes ForkPool >> addWorker to 'private' protocol
Merge pull request #340 from herby/placeholder-intention

No .wrapClassName abuse, intention-revealing .addClass.
Class comments on Kernel-Exceptions classes
Announcements class comments
Added String >> asRegexp (see issue #319)
Test for BlockClosure exception semantics
Stop the execution by throwing the exception on exception handling.
Fixes #238
Try to stock to the coding conventions (https://github.com/NicolasPetton/amber/wiki/Coding-conventions)