Dynamic log level control

• Adds support for dynamic log level control in the standard logger

Fix for thread affinity functionality and other bug fixes

• BUG FIX: MinGW/Windows related preprocessor fixes
• BUG FIX: No longer appending exact location of CoreFoundation in CMake
• BUG FIX: Fixing thread affinity symbol check in CMake
• BUG FIX: Preventing undefined behavior in allocators

Musl support and thread join changes

• Correct/improve musl support with respect to thread affinity control
• Update managed thread join to return success/failure, allowing downstream callers (CRTs) to branch shutdown logic between strict and permissive

Fix shared lib builds

fix shared libs (#762)

`aws_thread_set_managed_join_timeout_ns()` and `aws_thread_join_all_managed()` are declared in `thread.h` and implemented in `thread_shared.c`. But since `thread_shared.c` did not include `thread.h`, it was not seen as the implementation by the linker.

New managed thread API

• Transition to a new thread API for threads that cannot be explicitly joined by user code. These threads get lazily joined as their thread functions exit.

Introduce AWS_ERROR_NO_SPACE

• mapping ENOSPC to AWS_ERROR_NO_SPACE for out of space error

Numa set_mempolicy fix

• modifies how numa symbols are looked up so that symbols that are weak on certain platforms don't end up getting stomped.

Infinite Loop Fix

• Fixes an infinite loop in the thread scheduler

MSVC warnings fixes

v0.4.65

Disabled non-standard extension warning that is actually a lie on MSV…

Windows TryLock fix

• Fixes an issue with aws_mutex_try_lock on Windows