Minor cleanup in some of the shell scripts in the "tools" directory.
No functional changes.

 * Description header formatting
 * Added missing new line at the end of a file
 * Removed extra new lines at the end of a file
diff --git a/tools/dev/bin/onos-build-selective-hook b/tools/dev/bin/onos-build-selective-hook
index eb4e482..c27d747 100755
--- a/tools/dev/bin/onos-build-selective-hook
+++ b/tools/dev/bin/onos-build-selective-hook
@@ -1,8 +1,8 @@
 #!/bin/bash
-#------------------------------------------------------------------------------
+# ----------------------------------------------------------------------------
 # Echoes project-level directory if a Java file within is newer than the
 # target directory.
-#------------------------------------------------------------------------------
+# ----------------------------------------------------------------------------
 
 javaFile=${1#*\/src\/*\/java/}
 basename=${1/*\//}
@@ -14,4 +14,3 @@
 target=$project/target
 
 [ $target -nt ${src}$javaFile ] || echo ${src/src*/}
-