libuv 0.10.0

Closes #18408.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
Add current Ruby globals.

Allows access to the Ruby path. Needed for Linux
porting.
Add with_system_path to run using system PATHs.

Needed for Linux compatibility.
Don't run certain functions on non-MACOS.
Portability fixes to run Homebrew on Linux systems

Closes #16344.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
Relocate bottles using install_name_tool.

This has two parts:

1. Bottles are temporarily relocated on bottling and tested if that is
sufficient for them to contain no longer reference the prefix or
cellar. If so, they are marked as relocatable.
2. On installation if bottles are marked as relocatable they will be
relocated using install_name_tool to the current prefix and cellar.