Use fixed width integer types in Compiler

- Contributes to #535
- Contributes to #531
- Also address many code analysis issues from VS19 in-IDE parser
  - e.g. Use of enum class in preference to unscoped enums
- Define specific integer types (using enum class) for IPs and text positions to help identify
errors

Core/DolphinVM/Compiler/Compiler.idl

@@ -144,7 +144,10 @@ library CompilerLib
 		CInfoLast = CInfoHardBreakpoint
 	} FirstAndLastCodes;
 
-	typedef enum FLAGS {Default=0x00, SyntaxCheckOnly=0x02, NoOptimize=0x08, TextMap=0x10, TempsMap=0x20, DebugMethod=0x40, Boot=0x80, ScanOnly=0x100, Interactive=0x200, SendYourself=0x400} FLAGS;
+	cpp_quote("#define class_CompilerFlags class CompilerFlags")
+	typedef enum class_CompilerFlags
+	{Default=0x00, SyntaxCheckOnly=0x02, NoOptimize=0x08, TextMap=0x10, TempsMap=0x20, DebugMethod=0x40, Boot=0x80, ScanOnly=0x100, Interactive=0x200, SendYourself=0x400} FLAGS;
+	cpp_quote("#undef CompilerFlags")
 
 	[
 		object,

Core/DolphinVM/Compiler/CompilerSupport.cpp

@@ -14,15 +14,15 @@ be thrown away eventually, or perhaps compiled into a separate DLL.
 
 #include "..\VMPointers.h"
 
-POTE Compiler::NewCompiledMethod(POTE classPointer, unsigned numBytes, const STMethodHeader& hdr)
+POTE Compiler::NewCompiledMethod(POTE classPointer, size_t numBytes, const STMethodHeader& hdr)
 {
 	//_ASSERTE(ObjectMemory::inheritsFrom(classPointer, GetVMPointers().ClassCompiledMethod));
 	// Note we subtract
 	POTE methodPointer = m_piVM->NewObjectWithPointers(classPointer,
 		((sizeof(STCompiledMethod)
 			- sizeof(Oop)	// Deduct dummy literal frame entry (arrays cannot be zero sized in IDL)
 //			-sizeof(ObjectHeader)	// Deduct size of head which NewObjectWithPointers includes implicitly
-) / sizeof(Oop)) + GetLiteralCount());
+) / sizeof(Oop)) + LiteralCount);
 	STCompiledMethod* method = reinterpret_cast<STCompiledMethod*>(GetObj(methodPointer));
 	POTE bytes = m_piVM->NewByteArray(numBytes);
 	m_piVM->StorePointerWithValue((Oop*)&method->byteCodes, Oop(bytes));