Improvements to C/C++ analysis

General improvements

Query	Tags	Purpose

Query	Expected impact	Change
Mismatching new/free or malloc/delete (`cpp/new-free-mismatch`)	Fewer false positive results	Fixed an issue where functions were being identified as allocation functions inappropriately. Also affects `cpp/new-array-delete-mismatch` and `cpp/new-delete-array-mismatch`.
Overflow in uncontrolled allocation size (`cpp/uncontrolled-allocation-size`)	More correct results	This query has been reworked so that it can find a wider variety of results.
Memory may not be freed (`cpp/memory-may-not-be-freed`)	More correct results	Support added for more Microsoft-specific allocation functions, including `LocalAlloc`, `GlobalAlloc`, `HeapAlloc` and `CoTaskMemAlloc`.
Memory is never freed (`cpp/memory-never-freed`)	More correct results	Support added for more Microsoft-specific allocation functions, including `LocalAlloc`, `GlobalAlloc`, `HeapAlloc` and `CoTaskMemAlloc`.
Resource not released in destructor (`cpp/resource-not-released-in-destructor`)	Fewer false positive results	Resource allocation and deallocation functions are now determined more accurately.
Comparison result is always the same	Fewer false positive results	The range analysis library is now more conservative about floating point values being possibly `NaN`