android-sdk build-tools version changed to 20.0.0

Changed build-tools to the latest version, 20.0.0

Closes #30498.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
Give more detailed information about link errors at install-time
Fix linuxbrew installation.

Linux uses *.so instead of *.dylib for shared libraries, so even
though it was compiling, nothing was being moved to the proper
place.
tbb: add 4.2.4 bottle.