0.6.16

The Featureless Linux Library stable version 0.6.16 is released.

This only has boot strap script changes and some stand alone build setting changes.

The following are changes since the `0.6.15` stable release.

Exploit Fixes:
  - None.

Security Fixes:
  - None.

Features:
  - None.

Bug Fixes:
  - FLL: The bootstrap script is overwriting existing multi-valued settings.
  - FLL: Incomplete and invalid bootstrap.sh settings.
  - FLL: The bootstrap.sh script isn't loading build_libraries setting properly.

Refactors:
  - None.

Regressions:
  - None.

Updates:
  - None.
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