_WIN32 is defined on all Windows platforms by every compiler that
targets Windows. We do not need WIN32 at all.
Signed-off-by: Mark Harris <mark.hsj@gmail.com>
Resolves https://github.com/xiph/opus/pull/104
Should make the projects a bit easier to digest and the differences
between the different configurations and platforms be more obvious.
A (happy?) side effect of this is the static libraries are now about
the same size as the ones produced by GCC and seem to build fine with
opus-tools.
Needs testing with other third party applications to make sure nothing
is missing that shouldn't.
Signed-off-by: Mark Harris <mark.hsj@gmail.com>