See the revisions a few steps prior for more fine-grained information. This just
needs to be relanded because our automation doesn't like non-ASCII commit
messages.
--HG--
extra : amend_source : 0ee4e0da1ea9ada815abfe989c51030db24aac56
CLOSED TREE
Backed out changeset 28abb8af2d62 (bug 1099430)
Backed out changeset 358aa39360d5 (bug 1099430)
Backed out changeset 3313e545f4f6 (bug 1099430)
This change allows us to use use MOZILLA_DIR even for changes in config.mk. The
corollary is that comm-central needs to define MOZILLA_DIR before calling into
baseconfig.mk, which it already does.
The change to the test Makefile is needed since it decides to skip including
config.mk, and hence baseconfig.mk, where it would need to grab the MOZILLA_DIR
declaration.