Update logging & logging documentation for API changes.
[doc,getting-started-cli] Note where things are installed on 64-bit Windows.

Fixes #628.
[io,streams] Clean up whitespace.
[hacker-guide] Fix typo.
[dfmc] Remove unused thread-property-definer.
Merge pull request #743 from waywardmonkeys/remove-unused-macro

[dfmc] Remove unused thread-property-definer.
[dfmc] Remove unused optimization level stuff.

This hasn't been used since 1997 or earlier.
Merge pull request #744 from waywardmonkeys/remove-optimization-level-constants

[dfmc] Remove unused optimization level stuff.
[duim] Remove duim-gifs.

This was never completed or used.
Add 'Running tests' section to README.
[doc,library-ref] Provide an example of finalization.

Fixes #583.
[variable-search] Cleanup whitespace.
[variable-search] Use concatenate instead of format-to-string.
Merge pull request #745 from waywardmonkeys/remove-duim-gifs

[duim] Remove duim-gifs.
Merge pull request #748 from waywardmonkeys/remove-format-to-string-usage

Remove format to string usage
[variable-search] Remove unused imports.
[rt] Start calling the MPS-style API.
[rt] Map prim_allocate_filled to new API.
[rt,c] Switch more things over to the collector APIs.
[crt] Use GC_MALLOC_ATOMIC where possible.