GP-0: Change SymbolicSummaryZ3 to be an extension.

Ghidra/Extensions/SymbolicSummaryZ3/build.gradle

@@ -16,10 +16,10 @@
 apply from: "$rootProject.projectDir/gradle/javaProject.gradle"
 apply from: "$rootProject.projectDir/gradle/jacocoProject.gradle"
 apply from: "$rootProject.projectDir/gradle/javaTestProject.gradle"
-apply from: "$rootProject.projectDir/gradle/distributableGhidraModule.gradle"
+apply from: "$rootProject.projectDir/gradle/distributableGhidraExtension.gradle"
 
 apply plugin: 'eclipse'
-eclipse.project.name = 'Debug SymbolicSummaryZ3'
+eclipse.project.name = 'Xtra SymbolicSummaryZ3'
 
 ext.Z3_VER = "4.13.0"
 ext.Z3_ARM64_OSX_VER = "11.0"
@@ -126,11 +126,11 @@ task z3DevUnpackPlatforms(type: Copy) {
 	destinationDir file("build/os")
 }
 
-rootProject.assembleDistribution {
-	into(getZipPath(this.project) + "/os") {
+zipExtensions {
+	into(getBaseProjectName(this.project) + "/os") {
 		with z3CopySpec
 	}
-	into(getZipPath(this.project)) {
+	into(getBaseProjectName(this.project)) {
 		from(this.project.file(".")) {
 			include("README.md")
 		}