cmake: Bump version to 1.2.90

In preparation for waffle-1.3.0.

Signed-off-by: Chad Versace <chad.versace@linux.intel.com>
man: Bump manpage copyright dates to 2013

Signed-off-by: Chad Versace <chad.versace@linux.intel.com>
man: Fix copy-paste errors in refentry.id

Signed-off-by: Chad Versace <chad.versace@linux.intel.com>