Cleanup of Dyninst build dependencies (#238)

- Refactor elfutils build folders. Move build artifacts to the "external" subfolders
- Remove reference to unused DYNINST configuration
- Declare Dyninst interfaces with other external declarations
- Updated cmake warning message
- Update the deprecation warning for "DYNINST_BUILD_${dep}" to make it clearer that the option is being translated to the new option, "ROCPROFSYS_BUILD_${dep}"

[ROCm/rocprofiler-systems commit: eaaec2cc3b]

projects/rocprofiler-systems/cmake/ConfigCPack.cmake

@@ -143,9 +143,6 @@ string(REGEX REPLACE "([a-zA-Z])-([0-9])" "\\1\\2" CPACK_DEBIAN_PACKAGE_RELEASE
                      "${CPACK_DEBIAN_PACKAGE_RELEASE}")
 string(REPLACE "-" "~" CPACK_DEBIAN_PACKAGE_RELEASE "${CPACK_DEBIAN_PACKAGE_RELEASE}")
 
-if(DYNINST_USE_OpenMP)
-    list(APPEND _DEBIAN_PACKAGE_DEPENDS libgomp1)
-endif()
 if(ROCPROFSYS_USE_PAPI AND NOT ROCPROFSYS_BUILD_PAPI)
     list(APPEND _DEBIAN_PACKAGE_DEPENDS libpapi-dev libpfm4)
 endif()