tree 856ea894dc2f3032b842f3e4e2fbf9c3584186f8
parent 40644b462254638db93501d7fcd37ceea301b699
author Chris Dickens <christopher.a.dickens@gmail.com> 1608413423 -0800
committer Chris Dickens <christopher.a.dickens@gmail.com> 1608413423 -0800

Windows: Cleanup header includes and definiions

Now that a sufficiently recent toolchain is required to build, we can
drop a bunch of redundant definitions and get the definitions from the
Windows headers instead. We can also remove a number of '#ifndef'
guards because no header included by the source would have defined the
symbols being protected.

Signed-off-by: Chris Dickens <christopher.a.dickens@gmail.com>