HHH-10579 : Add missing Manifest data

build.gradle

@@ -183,6 +183,10 @@ subprojects { subProject ->
 			instruction 'Implementation-Version', version
 			instruction 'Implementation-Vendor', 'Hibernate.org'
 			instruction 'Implementation-Vendor-Id', 'org.hibernate'
+			instruction 'Implementation-Title', name
+			instruction 'Specification-Title', name
+			instruction 'Specification-Version', version
+			instruction 'Specification-Vendor', 'Hibernate.org'
 		}
 	}
 
@@ -315,6 +319,10 @@ subprojects { subProject ->
 		from sourceSets.main.allSource
 		classifier = 'sources'
 	}
+
+	sourcesJar {
+		manifest = jar.manifest
+	}
 }
 
 task release(type: Task, dependsOn: 'release:release')

tooling/metamodel-generator/hibernate-jpamodelgen.gradle

@@ -42,8 +42,10 @@ compileTestJava {
 
 jar {
 	manifest {
-		attributes 'Implementation-Title'     : '${project.name}', 
-		           'Implementation-Version'   : '${project.version}'
+		attributes 'Implementation-Title'     : name,
+		           'Implementation-Version'   : version,
+		           'Specification-Title'      : name,
+		           'Specification-Version'    : version
 	}
 }