bitbake-user-manual-fetching.xml: Added new clearcase fetcher module.

Reported-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
bitbake-user-manual/bitbake-user-manual-intro.xml: Fixed link

I inadvertantly used a &YOCTO_* variable in the book to get
a link to the landing YP page.  Of course this does not work.
I replaced it with the actual URL.  Unfortunately, a previous
commit slipped through that would have prevented the manual
from "making" correctly.

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
bitbake-user-manual-fetching.xml: Minor edits to clearcase fetcher

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
bitbake-user-manual-metadata.xml: Fixed variable flags example.

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>