DrTrigon has posted comments on this change.
Change subject: improvement; change external simplejson from git submodule to internal management ......................................................................
Patch Set 1:
@Ladsgroup: 1) I had no time to include the externals handling into core yet. 2) Regarding compat, a few 2 or 3 submodules are there and can be cloned directly by using '--recursive', the other python modules needed get downloaded on first use by externals/__init__.py - so to answer your question; submodules HAVE TO, the others CAN be included into nightlies, later will be downloaded anyway if not included.
@Merlijn, Xqt: Ok I will change this patch in order to completely remove simplejson (from both submodule and externals/__init__.py). But first I have to make 'git review -d ID' working on my machine, sorry for the delay!