Add HIPRTC, glorious ersatz for NVRTC (#1097)

* Add ersatz for NVRTC.

* Fix extraneous paren and use correct namespace.

* Use lowerCamelCase (yuck, yuck) consistently.

* Link against FS when building hiprtc lib.

* Correctly mark Manipulators. Fix dual compile.

* Add unit tests. Extend HIT to accept linker options.

* Make sure the HIPRTC library is installed.

* Better logging. Try to auto-detect the target.

* Stop specifying the target explicitly.

* Add missing flavour of `hipModuleLaunchKernel`.

* Program was already destroyed.

* Don't use `--genco`. Fix mangled name trimming.

* Fix HIPRTC breakage due to upstream noise.

* [dtests] Replace RUN -> TEST in hiprtc tests

Change-Id: Ie499e92dfe4e5c94634b1c2b76cf52d241bcfea3

* [hit] Set HIP_PATH to HIP_ROOT_DIR for all tests

Change-Id: Ib0ad1f99bc71c03e363e055dd508a7a4a210680a


[ROCm/hip commit: ccfb764a59]

projects/hip/packaging/hip_hcc.txt

@@ -3,6 +3,7 @@ project(hip_hcc)
 
 install(FILES @PROJECT_BINARY_DIR@/libhip_hcc.so DESTINATION lib)
 install(FILES @PROJECT_BINARY_DIR@/libhip_hcc_static.a DESTINATION lib)
+install(FILES @PROJECT_BINARY_DIR@/libhiprtc.so DESTINATION lib)
 install(FILES @PROJECT_BINARY_DIR@/.hipInfo DESTINATION lib)
 install(FILES @PROJECT_BINARY_DIR@/hip-config.cmake @PROJECT_BINARY_DIR@/hip-config-version.cmake DESTINATION lib/cmake/hip)
 install(FILES @hip_SOURCE_DIR@/packaging/hip-targets.cmake @hip_SOURCE_DIR@/packaging/hip-targets-release.cmake DESTINATION lib/cmake/hip)