Convert LLSD map accessors to use transparent comparators and string_views to reduce string temporaries

Andrey Kleshchev authored 4 years ago and Rye Mutt committed 4 years ago

LLSingleton depends onto logging system, having logging system be based on LLSingleton causes crashes and deadlocks

Fix flaky test that broke due to an msvc update by disabling compiler optimizations around it, this static shit is dangerous. :/

This broke tests all over the place.

This reverts commit 1aa62ceb.