Always pass -headerpad_max_install_names to the linker

We use install_name_tool pretty liberally, so we need to take steps to
ensure libraries and executables are always linked with this flag.

Closes #20233.
Fixes #17984.
Fixes #22078.
youtube-dl 2013.08.22

Removed the mirror: the tar from GitHub doesn't have the same checksum

Closes #22095.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
elixir: fixed detection of homebrew installed erlang

Closes #22094.
Closes #22040.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
openssl: run "make depend" to recompute header dependencies

Fixes #21895.