Add missing inline keywords to cudautils::launch (#430)

Author: fwyzard

HeterogeneousCore/CUDAUtilities/interface/launch.h

@@ -88,14 +88,11 @@ namespace cudautils {
       void operator()(void const* ptrs[], Tuple const& t) {}
     };
 
-#if 0
-#endif
-
   }  // namespace detail
 
   // wrappers for cudaLaunchKernel
 
-  void launch(void (*kernel)(), LaunchParameters config) {
+  inline void launch(void (*kernel)(), LaunchParameters config) {
     cudaCheck(cudaLaunchKernel(
         (const void*)kernel, config.gridDim, config.blockDim, nullptr, config.sharedMem, config.stream));
   }
@@ -120,7 +117,7 @@ namespace cudautils {
 
   // wrappers for cudaLaunchCooperativeKernel
 
-  void launch_cooperative(void (*kernel)(), LaunchParameters config) {
+  inline void launch_cooperative(void (*kernel)(), LaunchParameters config) {
     cudaCheck(cudaLaunchCooperativeKernel(
         (const void*)kernel, config.gridDim, config.blockDim, nullptr, config.sharedMem, config.stream));
   }