Basetools: It went wrong when use os.linesep

in python2 and python3,use of line breaks

Cc: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Zhiju.Fan <zhijux.fan@intel.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Bob Feng <bob.c.feng@intel.com>

BaseTools/Source/Python/AutoGen/GenMake.py

@@ -548,8 +548,8 @@ cleanlib:
                 NewRespStr = ' '.join(NewStr)
                 SaveFileOnChange(RespFile, NewRespStr, False)
                 ToolsDef.append("%s = %s" % (Resp, UnexpandMacroStr + ' @' + RespFile))
-                RespFileListContent += '@' + RespFile + os.linesep
-                RespFileListContent += NewRespStr + os.linesep
+                RespFileListContent += '@' + RespFile + TAB_LINE_BREAK
+                RespFileListContent += NewRespStr + TAB_LINE_BREAK
             SaveFileOnChange(RespFileList, RespFileListContent, False)
         else:
             if os.path.exists(RespFileList):