XRay Profiling: Remove dependency on InternalAlloc/InternalFree

[llvmbot]

Bugzilla Link	38577
Version	unspecified
OS	All
Reporter	LLVM Bugzilla Contributor

Extended Description

We've found that use of the internal allocators in the profiling runtime's profile collection service interferes with some custom malloc implementations (like tcmalloc). This bug tracks the work to remove reliance on the internal allocator(s) from all aspects of the profiling mode runtime for XRay.

[llvmbot]

Fixed in r339978.

[llvmbot]

It seems we've missed more cases of this in the profiling runtime. Reopening to track more changes.