providers.py: print a debug message for dynamic pacakge

We can't know the dynamic pacakge's name exactly, there might be a
problem, for example, when we use:

IMAGE_INSTALL_append += "ncurses-lib12344"

The ncurses-lib12344 matches ncurses' dynamic packages pattern:

PACKAGES_DYNAMIC = "^${PN}-lib.*"

so there is no errors before the rootfs creation though there is no
ncurses-lib12344.

We can warn this, but I think that we'd better not since there are many
dynamic packages, or there would be too many warnings, for example, the
perl and kernel modules, maybe we can print a debug message for it.

[YOCTO #4798]

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
hob: changed the split of SSTATE_MIRRORS variable

Until now the split made searching the string "file://", but
this is not ok when SSTATE_VARIABLE has the following form:
SSTATE_MIRRORS ?= "\
     file://.* http://someserver.tld/share/sstate/PATH \n \
     file://.* file:///some/local/dir/sstate/PATH"

In the documentation I've found that \n is the list separator.

[YOCTO #4857]
Signed-off-by: Cristiana Voicu <cristiana.voicu@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
hob: sstatemirror is standard also for file://.* regex

Signed-off-by: Cristiana Voicu <cristiana.voicu@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
bitbake: runqueue: add warning if invalidating invalid task

Add a warning if 'bitbake -C' is executed with a task that does not
exist.

Fixes [YOCTO #4877]

Signed-off-by: Petter Mabäcker <petter@technux.se>
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>