Improved guicorn startup script so that it works wherever it is called
Added an horrible kluldge to pin TM_HOME in the client

--HG--
extra : rebase_source : a672c002c5855efe5a87cfa6da76087bb2d5af36
Added some logging
Added event logging
Simplified signature check and auth
Moved setpath from client to bootstrap
Simpified signature check path during bootstrap
Trying to make quoting of replaced parameters more robust
Removed DATA from client
Added tests for quotes in DATA
Remove spurious commands from client
Deeply reworked untar (so to preserve permission and be able to re-untar on dirs and files with permissions down to 0000), added lstar