ETCH-286 Missing newline at end of file

Some header and implementation files generated by the etch-compiler are
missing a newline at the end of the file.

This might be resolved by updating the the velocity templates used by
the etch-compiler.

Change-Id: I313605c61c5d55b7ce8727400f72ada851e0dc77

git-svn-id: https://svn.apache.org/repos/asf/etch/trunk@1564654 13f79535-47bb-0310-9956-ffa450edef68