More memory to combined groovydoc task

Author: graemerocher

gradle/docs.gradle

@@ -83,6 +83,7 @@ task groovydoc(type:org.groovy.lang.groovydoc.tasks.GroovydocTask) {
     windowTitle = "Grails $grailsVersion"
     docTitle = "Grails $grailsVersion"
     source subs.sourceSets.main.groovy.srcDirs
+    jvmArgs "-Xmx768M"
 // Can't make these link methods to work
 //    link("http://static.springsource.org/spring/docs/3.0.x/javadoc-api", "org.springframework.")
 //    link("http://download.oracle.com/javase/1.5.0/docs/api", "java." , "javax.")