lttoolbox: Update to 3.8.2

[Dave-Allured]

Description

• Update lttoolbox 3.7.6 --> 3.8.2.
• Fix builds broken for unknown reasons.
• Add upstream ostream patch.
• Switch to Cmake build. Upstream removed Autotools.

Type(s)

• bugfix

Tested on

CI only.

Verification

Have you

• followed our Commit Message Guidelines?
• squashed and minimized your commits?
• checked that there aren't other open pull requests for the same change?
• checked your Portfile with port lint?
• tried existing tests with sudo port test?
• tried a full install with sudo port -vst install?
• tested basic functionality of all binary files?
• checked that the Portfile's most important variants haven't been broken?