Massive cleanup

[nmburgan]

This attempts to clean up the logic in as many configs as possible. Not only has the code turned into a bit of spaghetti over the years, but it contains a lot of dead code.

In general, the strategy here is to:

• Remove any platforms we will never build for (old).
• Keep platforms we don't currently build, but might in the future.
• In the future, we plan to move these runtime builds into the repos themselves (openvox/packaging and openbolt/packaging).
• After this, each branch will maintain its version of the packaging code.

Specifically, this commit:

• Removes anything to do with Ruby 2.7. If we need to go back to build 7.x, we can make a branch from a prior commit.
• Removes anything to do with AIX 7.1 or SLES 11, any 32-bit platforms, and any other platforms we will never build for. Leave in AIX and Solaris 10/11 code, as there is a nonzero chance we might look at these platforms in the future.
• Reduces code branching and indirection by integrating several files that were previously shared by different versions of components. We should not need to build more than one Ruby version for a particular OpenVox branch, for example, so integrate _base-ruby.rb into the ruby component.
• Removes old components no longer used.
• Integrates patches from mac_crosscompile branch. We aren't 100% sure we will be doing cross compilation for macos-all-x86_64, so attempted to keep things as flexible as possible until then.
• Attempts to make code more readable and compact