Fix next round of warning types

Fix next round of warning types

This change fixes the following warnings:
1) Assignment in a condition should be wrapped in ()
2) Priority of && / || should be indicated by parentheses.
3) Unknown #pragma optimize ifdefed out for non MSVC
4) Unused functions deleted or put under #ifdef
5) Extra tokens warning disabling moved to the CMakeLists.txt in the src/inc
6) Self assignment of a member or local variable
7) Assigning ~0 to a bitfield member that was just 8 bit wide

It also fixes a bug in the STRESS_LOGxx macro invocation in exceptionhandling.cpp and
stackwalk.cpp related to recent adding the DBG_ADDR macro usage. This macro expanded
a single parameter into two expressions to extract high / low 32 bits separately.
But the STRESS_LOGxx parameters are passed to the StressLog::LogMsg method as follows:
(void*)(size_t)(data1)
That means that the expanded pair x, y would be inserted as data 1 and that leads
to ignoring the x due to the comma operator.