Now builds from a clean repo:
developer/src/build.sh configure build test publish
* Splits kmbrowserhost into kmdbrowserhost for Developer; this means
that Developer Browser Host now inherits the Developer settings rather
than the Keyman for Windows settings, and simplifies distribution and
management. The only difference between the two is in the startup code
so this seems like a good split.
* Cleanup of various build scripts and dependencies.
Fixes the release build where we do `nmake symbols` for developer/src,
which was failing on calls to these two sets of components. (In
windows/src, the build structure is different due to an additional layer
of folders, so we end up with no `nmake symbols` call on the common
components).
