* Re-use existing settings/dk.mk to tunnel ENABLE_DEBUG into the SDK. Turns out
this was explicitly included in ~all examples Makefiles, but only after
settings.mk where it is now used, so include it in settings.mk now and dropped
it from all the exmaples Makefiles.
* The old settings.mk was apparently confused with using /MT ("link with
LIBCMT.LIB") on cl command line and /MD ("link with MSVCRT.LIB") on link
command line (where it was ignored), and you apparently can't pass both
together to cl, so I settled on /MD (resp. /MDd) now and dropped /MT (resp.
/MTd). No idea if that is exactly right, however.
* Introduced client-facing LIBO_SDK_LDFLAGS_STDLIBS that covers kernel32.lib and
msvcrt.lib vs. msvcrtd.lib on Windows. Adapted examples Makefiles and
/ure/source/uretest/Makefile accordingly. Some examples Makefiles
additionally use msvcprt.lib, no idea whether that still needs to be
addressed.
Change-Id: Ia8d9d177e415abfbaf6f9fa6239f0ef9998868be
