Apple M1: Build, Analytics, and Memory Management

Analytics:
- Incorporated fix to allow the full set of analytics that was recommended by
  spotlightishere

BuildMacOSUniversalBinary:
- The x86_64 slice for a universal binary is now built for 10.12
- The universal binary build script now can be configured though command line
  options instead of modifying the script itself.
- os.system calls were replaced with equivalent subprocess calls
- Formatting was reworked to be more PEP 8 compliant
- The script was refactored to make it more modular
- The com.apple.security.cs.disable-library-validation entitlement was removed

Memory Management:
- Changed the JITPageWrite*Execute*() functions to incorporate support for
  nesting

Other:
- Fixed several small lint errors
- Fixed doc and formatting mistakes
- Several small refactors to make things clearer

Source/Core/Common/Arm64Emitter.cpp

@@ -345,7 +345,7 @@ void ARM64XEmitter::FlushIcacheSection(u8* start, u8* end)
   if (start == end)
     return;
 
-#if defined(IOS) ||defined(__APPLE__)
+#if defined(IOS) || defined(__APPLE__)
   // Header file says this is equivalent to: sys_icache_invalidate(start, end - start);
   sys_cache_control(kCacheFunctionPrepareForExecution, start, end - start);
 #elif defined(WIN32)