[DynInst_API:] [dyninst/dyninst] 227677: Elfutils cleanup (#591)

[Tim Haines <noreply@xxxxxxxxxx>]

  Branch: refs/heads/master
  Home:   https://github.com/dyninst/dyninst
  Commit: 227677a69185330f4a8bb7cd9d4bf91425808831
      https://github.com/dyninst/dyninst/commit/227677a69185330f4a8bb7cd9d4bf91425808831
  Author: Tim Haines <thaines.astro@xxxxxxxxx>
  Date:   2019-05-02 (Thu, 02 May 2019)

  Changed paths:
    M CMakeLists.txt
    M README.md
    A cmake/ElfUtils.cmake
    A cmake/Modules/DyninstSystemPaths.cmake
    M cmake/Modules/FindLibDwarf.cmake
    M cmake/Modules/FindLibElf.cmake
    M cmake/packages.cmake
    M dwarf/CMakeLists.txt
    M elf/CMakeLists.txt
    M symtabAPI/CMakeLists.txt

  Log Message:
  -----------
  Elfutils cleanup (#591)

fixes #557
fixes #547
fixes #561

- Consolidate all elfutils options into cmake/ElfUtils.cmake
- Allow user to supply installation hint directories
- Allow user to specify minimum version
- Use user-specified minimum version when building from source instead of 'elfutils-latest.tar.gz'
- Unify system paths when searching for libelf and libdw (fixes #557)
- Correctly install headers/libs when building from source (fixes #547)
- Exports variables for use in Testsuite (fixes #561)
- Clean up formatting