Comment 31 for bug 740815

I think we want to stick with the directory structure current present in the hg repo.

Altering it for source releases means further modifications to the build system, and potential future-compatibilty gotchas; I think we really want to keep the source release story as simple as possible, and to make it as easy as possible for source-release users to become hg-clone users.

If you want to get technical about what's normal for a unix source package - NSPR and jemalloc would normally be completely separate packages, and at least NSPR probably will be distributed separately by Ubuntu et al. Jemalloc is less likely to be distributed separately, as it is radically different from upstream and has only one customer. Well, maybe two if XULRunner uses it.

Including NSPR with the shell is primarily to ease building - particularly for win32 - when JS_THREADSAFE goes away.