Updated imported headers to current Wine version.

git-svn-id: https://mingw-w64.svn.sourceforge.net/svnroot/mingw-w64/trunk@5834 4407c894-4637-0410-b4f5-ada5f102cad1
inputscope.idl: Use IDL file to generate inputscope.h.

git-svn-id: https://mingw-w64.svn.sourceforge.net/svnroot/mingw-w64/trunk@5835 4407c894-4637-0410-b4f5-ada5f102cad1
sal.h: Added __checkReturn define.

git-svn-id: https://mingw-w64.svn.sourceforge.net/svnroot/mingw-w64/trunk@5836 4407c894-4637-0410-b4f5-ada5f102cad1