winapi: Remove [w]WinMain declarations

They're intended to be implemented by the user, so lots of existing FB
code will have "declare function WinMain...", and FB doesn't allow
functions to be declared twice.
Remove uses of -unchecked (fbfrog no longer supports it)
raw. Regenerate with latest fbfrog (char typedef expansion)
Merge branch 'raw'

Conflicts:
	inc/win/ntdef.bi
	inc/win/winnt.bi
jit: Change jit_sbyte typedef back to byte
winapi: Add #inclibs (based on fbc's existing headers)
raw: Remove uses of -inclib (removed in latest fbfrog)
Merge branch 'raw'

Conflicts:
	inc/zip.bi
zip: Add #inclib