Patchelf

*    '--backup' saves a backup before modifying a file.
*    '--delete-rpath' deletes RPATHs and RUNPATHs.
*    '--print-rpath-type' tells whether it's RPATH or RUNPATH.
*    '--convert-rpath' converts an existing DT_RPATH to DT_RUNPATH.
*    '--with-gold-support' makes the 'hacky support' for executables created by the Gold linker now optional.
*    Move some code to header file.
*    Add the following new options: --add-needed & --replace-needed (contributed by rgcjonas), --add-needed-list, --remove-needed-list, --set-soname, --print-soname
*    Add short aliases for each option (-h, -I, -a, -S, ...)
*    Add tests for new options.
*    Changes in the no-rpath test (contributed by vdanjean), but without multi-arch tests.
*    Add Debian folder.
*    Rewrite manpage from scratch.
*    Mentioning of ALL known authors.
*    Other changes.