Update clang-offload-bundler usage (#1011)

The commands for clang-offload-bundler have been updated to use -output
instead of -outputs.  Update test.cpp which uses clang-offload-bundler
directly

Author: mdtoguchi

SYCL/SeparateCompile/test.cpp

@@ -18,12 +18,12 @@
 //
 // >> ---- bundle .o with .spv
 // >> run bundler
-// RUN: clang-offload-bundler -type=o -targets=host-x86_64,sycl-spir64-pc-linux-gnu -inputs=a.o,a_kernel.bc -outputs=a_fat.o
-// RUN: clang-offload-bundler -type=o -targets=host-x86_64,sycl-spir64-pc-linux-gnu -inputs=b.o,b_kernel.bc -outputs=b_fat.o
+// RUN: clang-offload-bundler -type=o -targets=host-x86_64,sycl-spir64-pc-linux-gnu -input=a.o -input=a_kernel.bc -output=a_fat.o
+// RUN: clang-offload-bundler -type=o -targets=host-x86_64,sycl-spir64-pc-linux-gnu -input=b.o -input=b_kernel.bc -output=b_fat.o
 //
 // >> ---- unbundle fat objects
-// RUN: clang-offload-bundler -type=o -targets=host-x86_64,sycl-spir64-pc-linux-gnu -outputs=a.o,a_kernel.bc -inputs=a_fat.o -unbundle
-// RUN: clang-offload-bundler -type=o -targets=host-x86_64,sycl-spir64-pc-linux-gnu -outputs=b.o,b_kernel.bc -inputs=b_fat.o -unbundle
+// RUN: clang-offload-bundler -type=o -targets=host-x86_64,sycl-spir64-pc-linux-gnu -output=a.o -output=a_kernel.bc -input=a_fat.o -unbundle
+// RUN: clang-offload-bundler -type=o -targets=host-x86_64,sycl-spir64-pc-linux-gnu -output=b.o -output=b_kernel.bc -input=b_fat.o -unbundle
 //
 // >> ---- link device code
 // RUN: llvm-link -o=app.bc a_kernel.bc b_kernel.bc