Add a magic property that lists the targets that have been specified in order to run the current project. Based on patch by Colm Smyth (just like rev663051 was). PR 44980

Files:
modified: /ant/core/trunk/src/main/org/apache/tools/ant/MagicNames.java (try)
modified: /ant/core/trunk/src/main/org/apache/tools/ant/Project.java (try)
modified: /ant/core/trunk/docs/manual/using.html (try)
modified: /ant/core/trunk/src/main/org/apache/tools/ant/util/CollectionUtils.java (try)
modified: /ant/core/trunk/WHATSNEW (try)
modified: /ant/core/trunk/src/tests/antunit/core/magic-names-test.xml (try)