copy files from the develop folder of addons to the develop folder of the project

--HG--
branch : 1.1
fix recursion copy

--HG--
branch : 1.1
re-initializing assets is only required for <0.9 systems

--HG--
branch : 1.1
extra : rebase_source : 6de6f2f77fa676d760764a1e22421583d0258e90
extra : amend_source : ed889f032cbcda6407b28d0364ac1d989ccc94cb
$pkgDir is not only used in sally < 0.9.0

--HG--
branch : 1.1
extra : source : 5e8395eae8f5a263be9f5e0f8433e45d3fd21b1c