libav: add libpostproc to PROVIDES (for 0.8.x version only)

There is a separate libpostproc recipe in meta-oe for use with 9.x and
later versions of libav for those few that need libpostproc; however if
you just add meta-oe and try to build libpostproc without selecting the
libav 9.x version recipe, you'll be building the libpostproc recipe
together with libav 0.8.x, which provides its own libpostproc; this
leads to confusing errors at packaging time. In order to flag up that
these conflict more appropriately, add libpostproc to PROVIDES
explicitly so that you at least get a multiple providers error at the
start of the build.

Fixes [YOCTO #5335].

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
classes/insane: restore printing LIC_FILES_CHKSUM checksum if not specified

OE-Core rev ec8590aa81e201e28e500935d31cd7266114471f (by me)
unintentionally disabled printing the actual checksum value if no
checksum was specified, i.e.:

LIC_FILES_CHKSUM = "file://COPYING;md5="

Printing the actual checksum in this case is really useful when writing
a new recipe, so put this back in.

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
valgrind: upgrade to 3.9.0

Changed patches directory to "valgrind";
Removed 4 patches because they were merged upstream;
Updated 2 patches because now it has configure.ac instead of .in;
Changed license md5 for 2 files because of a small change for copyright
year

Signed-off-by: Cristiana Voicu <cristiana.voicu@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
toaster.bbclass: fix crash on buildstats collection

Toaster needs buildstats to be enabled in order to
collect task statistics. The toaster.bbclass didn't
have a guard to stop task data collection if the buildstats
weren't enabled, leading to a crash.

This patch verifies that the task variables are defined before
trying to use them.

Signed-off-by: Alexandru DAMIAN <alexandru.damian@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>