marked spring-tx as a required dependency (SPR-6737)

Author: jhoeller

org.springframework.jms/ivy.xml

@@ -44,7 +44,7 @@
 		<dependency org="org.springframework" name="org.springframework.oxm" rev="latest.integration"
 					conf="optional, oxm->compile"/>
 		<dependency org="org.springframework" name="org.springframework.transaction" rev="latest.integration"
-					conf="optional, jca->compile"/>
+					conf="compile->compile"/>
 	</dependencies>
 
 </ivy-module>

org.springframework.jms/pom.xml

@@ -88,7 +88,7 @@
       <groupId>org.springframework</groupId>
       <artifactId>spring-tx</artifactId>
       <version>${project.version}</version>
-      <optional>true</optional>
+      <scope>compile</scope>
     </dependency>
   </dependencies>
   <build>