Provide a LocalAlloc replacement using HeapAlloc

git-svn-id: https://mingw-w64.svn.sourceforge.net/svnroot/mingw-w64@5850 4407c894-4637-0410-b4f5-ada5f102cad1
Provide a LocalFree replacement using HeapFree

git-svn-id: https://mingw-w64.svn.sourceforge.net/svnroot/mingw-w64@5851 4407c894-4637-0410-b4f5-ada5f102cad1
Provide a Sleep replacement using WaitForSingleObjectEx

git-svn-id: https://mingw-w64.svn.sourceforge.net/svnroot/mingw-w64@5852 4407c894-4637-0410-b4f5-ada5f102cad1
Provide a SleepEx replacement using WaitForSingleObjectEx

git-svn-id: https://mingw-w64.svn.sourceforge.net/svnroot/mingw-w64@5853 4407c894-4637-0410-b4f5-ada5f102cad1
Provide a SetFilePointer replacement with SetFilePointerEx

git-svn-id: https://mingw-w64.svn.sourceforge.net/svnroot/mingw-w64@5854 4407c894-4637-0410-b4f5-ada5f102cad1
Provide a replacement for GetFileSize using GetFileInformationByHandleEx

git-svn-id: https://mingw-w64.svn.sourceforge.net/svnroot/mingw-w64@5855 4407c894-4637-0410-b4f5-ada5f102cad1