We no longer need to backup debug files as they are saved to the symbol
store during a release build. This reduces the amount of storage
required for a release build and should speed up the build also.
Also fixes the broken build where backup had not been updated for the
new consistent build paths.
Move to all projects using bin/ and obj/ for outputs, and
cleanup all Makefiles and project files accordingly. Remove
some obsolete projects along the way. Cleanup .gitignore
also.
Fixes#4447.
Fixes#4222.
The symptoms for these two issues are related: the language associations
change and keyboards stop functioning correctly. The issue is described
in detail in #4447.
Although this fix should be considered 'experimental', we should
probably include it in the release of 14.0, because it fixes a
longstanding issue with Keyman and Windows languages.
