Replace patchelf usage with rbelftools/patchelf.rb

[woodruffw]

In progress.

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[woodruffw]

This is going to require multiple changes to rbelftools and patchelf.rb, tracking them below:

• elftools: Add finer-grained exceptions david942j/rbelftools#43
• patchelf: Optional logging, exception API david942j/patchelf.rb#13