[WinOF] makebin now copies DAT header files to bin\DAPL if %1\ulp\dapl\dat\include...

[WinOF] makebin now copies DAT header files to bin\DAPL if %1\ulp\dapl\dat\include\dat is present.
xcopy becomes confused as to whether the dest is a file or directory when the file is copied and renamed (case of WOW64 files). Confusion results in xcopy prompting for user input. Changed offending copy lines from xcopy to copy /B, enable makebin script run to completion without user input.

git-svn-id: svn://openib.tc.cornell.edu/gen1@760 ad392aa1-c5ef-ae45-8dd8-e69d62a5ef86