Mostly mindless s/Construct/Mixed replacement is done.

Need to fix the remaining compile errors individually.

src/main/java/com/laytonsmith/core/functions/AbstractFunction.java

@@ -15,13 +15,13 @@
 import com.laytonsmith.core.constructs.CClosure;
 import com.laytonsmith.core.constructs.CString;
 import com.laytonsmith.core.constructs.CVoid;
-import com.laytonsmith.core.constructs.Construct;
 import com.laytonsmith.core.constructs.IVariable;
 import com.laytonsmith.core.constructs.IVariableList;
 import com.laytonsmith.core.constructs.Target;
 import com.laytonsmith.core.environments.Environment;
 import com.laytonsmith.core.exceptions.ConfigCompileException;
 import com.laytonsmith.core.exceptions.ConfigRuntimeException;
+import com.laytonsmith.core.natives.interfaces.Mixed;
 import com.laytonsmith.core.snapins.PackagePermission;
 import com.laytonsmith.tools.docgen.DocGenTemplates;
 import com.laytonsmith.tools.docgen.DocGenTemplates.Generator.GenerateException;
@@ -51,7 +51,7 @@ protected AbstractFunction() {
 	 * @return
 	 */
 	@Override
-	public Construct execs(Target t, Environment env, Script parent, ParseTree... nodes) {
+	public Mixed execs(Target t, Environment env, Script parent, ParseTree... nodes) {
 		return CVoid.VOID;
 	}
 
@@ -83,7 +83,7 @@ public final boolean appearInDocumentation() {
 	 * @param args
 	 * @return
 	 */
-	public Construct optimize(Target t, Construct... args) throws ConfigCompileException {
+	public Mixed optimize(Target t, Mixed... args) throws ConfigCompileException {
 		return null;
 	}
 
@@ -134,18 +134,18 @@ public LogLevel profileAt() {
 	}
 
 	@Override
-	public String profileMessage(Construct... args) {
+	public String profileMessage(Mixed... args) {
 		StringBuilder b = new StringBuilder();
 		boolean first = true;
-		for(Construct ccc : args) {
+		for(Mixed ccc : args) {
 			if(!first) {
 				b.append(", ");
 			}
 			first = false;
 			if(ccc instanceof CArray) {
 				//Arrays take too long to toString, so we don't want to actually toString them here if
 				//we don't need to.
-				b.append("<arrayNotShown size:" + ((CArray) ccc).size() + ">");
+				b.append("<arrayNotShown size:").append(((CArray) ccc).size()).append(">");
 			} else if(ccc instanceof CClosure) {
 				//The toString of a closure is too long, so let's not output them either.
 				b.append("<closureNotShown>");