First fix of typos and misspellings

Small change to start build jobs

Third patch set adds sql/executor/cluster.h with 2 actual
typos fixed, copyright date changed to match the "Created:"
comment.

In fourth patch set, white space changes have been reduced,
just some blank lines are removed.

Change-Id: I05b3b55780badc0cb6671f9455f4244b6c78d5ac