- eliminate ambiguities between GNU-ish and SysV-ish make flavors;
- switch [back] to -e;
- fold/unify rules;
This is follow-up to the patch introducing common BUILDENV. Idea is
to collect as much parameters in $(TOP) as possible and "strip" lower
Makefiles for most variables [and thus makes them more readable].
compiled into *our* aplpications. That's because mingw is always
consistent with itself. Having library-side code linked into .dll
makes it possible to deploy the .dll with user-code compiled with
another compiler [which is pretty much the whole point behind Applink].
