Fix the linker flags for the gnu driver when debug info is enabled

Author: hjyamauchi

utils/build.ps1

@@ -1121,8 +1121,8 @@ function Build-CMakeProject {
         Append-FlagsDefine $Defines CMAKE_POLICY_CMP0141 NEW
         # Add additional linker flags for generating the debug info.
         if ($UseGNUDriver) {
-          Append-FlagsDefine $Defines CMAKE_SHARED_LINKER_FLAGS "-Xlinker -debug"
-          Append-FlagsDefine $Defines CMAKE_EXE_LINKER_FLAGS "-Xlinker -debug"
+          Append-FlagsDefine $Defines CMAKE_SHARED_LINKER_FLAGS @("-Xlinker", "-debug")
+          Append-FlagsDefine $Defines CMAKE_EXE_LINKER_FLAGS @("-Xlinker", "-debug")
         } else {
           Append-FlagsDefine $Defines CMAKE_SHARED_LINKER_FLAGS "/debug"
           Append-FlagsDefine $Defines CMAKE_EXE_LINKER_FLAGS "/debug"