bitbake: lib/bb/cache.py: Change debugging note to a debug message

Some apparently debugging was left in in a previous commit.  This caused
bitbake to return a list of bbappends when things changed from the cache.

Make this a proper debug message.

(Bitbake master rev: 1965e5cbdfede18d7b7cb0218e0a5147c3f1c884)

Signed-off-by: Mark Hatle <mark.hatle@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
fetch2: Don't allow '/' in user:pass, fix branch containing '@'

* currently decode_url regexp parses branch=@foo as username so it ends like this:
  - ('git', '', 'foo', 'git.openembedded.org/bitbake;branch=', '', {})
  + ('git', 'git.openembedded.org', '/bitbake', '', '', {'branch': '@foo'})
* http://hg.python.org/cpython/file/2.7/Lib/urlparse.py also assumes
  that there is at least one '/' as separator between netloc and path,
  params, so it looks reasonable to prevent including '/' in username

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>