Add cppia subtarget for Mac and Linux

[player-03]

Lime already has partial cppia support, but this change attempts to expand that. It's not my work, but I'm submitting this because it currently seems to be abandoned. You can contribute by submitting a pull request to the cppia branch.

[player-03]

Since the merge commit is so huge, I'm going to note the one significant decision I made while merging. The cppia branch made this change to the platform classes:

-PathHelper.mkdir (targetDirectory + "/obj");
+if (targetType != "cppia") {
+
+	PathHelper.mkdir (targetDirectory + "/obj");
+
+}

I reverted the change to keep the code simpler. Creating an unused folder isn't a big deal at all.