public void initializeDefaultValues(Language lang, CompilerSpec compilerSpec) {
		defaultRegisterValueMap.clear();
		lang.applyContextSettings(this);
		if (compilerSpec != null) {
			compilerSpec.applyContextSettings(this);
		}
	}
Intialize context with default values defined by pspec and cspec.
NOTE: cspec values take precedence
@param lang processor language
@param compilerSpec compiler specification
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/register/ProgramRegisterContextDB.java