Need reviewer - minor top level make changes

[Kelly O'Hair]

Need reviewer. Some very minor top level make file changes.

6727046: Add message when docs are skipped in control build
6864011: typo? in top level Makefile: DAYE_STAMP

http://cr.openjdk.java.net/~ohair/openjdk7/top-make-fixes/webrev/

-kto