Add shouldRunAfter ordering for Ant target dependencies
Return CopySpec instead of CopySpecInternal.
Fix content type meta tag in HTML test report.
Merge PR #224 - Add shouldRunAfter ordering to Ant target dependencies

https://github.com/gradle/gradle/pull/224

Conflicts:
	subprojects/core/src/main/groovy/org/gradle/api/internal/project/DefaultAntBuilder.groovy
Tests for ant target dependency ordering.
Mention ant target dependency ordering in release notes.
Provide a specific error message if an Ant target tries to depend on something that doesn't exist.
Test that trying to set dependency ordering between non existent ant target dependencies does not produce errors.
Merge branch 'master' of github.com:gradle/gradle