Added missing "mkdir" when compiling sample tests; a few other minor improvements to Ant targets.
Added missing "mkdir" when compiling sample tests; a few other minor improvements to Ant targets.

git-svn-id: d596a19132b705a85694e062da4def6039642bfb@1699 4d38ed0c-b8d3-11de-a71d-8f2b2e058ad8

borisbrodski/jmockit,borisbrodski/jmockit