GP-0 updated check for Gnu demangler check to not rely on option

internals, which were changed to remove the previously checked for
string,  but instead the Options class name. This fixed the four
breaking RTTI tests.

Ghidra/Features/Decompiler/ghidra_scripts/classrecovery/RTTIGccClassRecoverer.java

@@ -3069,7 +3069,7 @@ public class RTTIGccClassRecoverer extends RTTIClassRecoverer {
 			// Currently no good way to do this since this is in Decompiler package and GnuDemangler
 			// is in its own package. Once no longer a script but an analyzer in Base, update to 
 			// do !(options instanceof GnuDemanglerOptions)
-			if (!options.toString().contains("gnu")) {
+			if (!options.getClass().getName().contains("Gnu")) {
 				continue;
 			}