do_distro_check: Recipe exists in other distros?

This adds a new task (distro_check) for each recipe.
The task generates the source package list for Fedora OpenSuSE
Ubuntu Debian & Mandriva Linux distros.

As one recipe or source package can generate multiple target packages
the recipe name is compared with the source package name list of LInux
distributions.

Thread locking is used to avoid multiple threads racing for the
package list update.

Then the recipe name (PN) is checked if it exists in the package
list of distros. And if the DISTRO_PN_ALIAS then it is used to copmare
pacakge_name instead of the PN variable. Just for example the
DISTRO_PN_ALIAS can be defined in the recipe (.bb) files like this

In the file xset_1.0.4.bb:

DISTRO_PN_ALIAS = "Fedora=xorg-x11-server-utils;\
   Ubuntu=x11-xserver-utils; Debian=x11-xserver-utils;Opensuse=xorg-x11"

The final results are stored in the tmp/log/distro_check-${DATETIME}.result
file.

FYI this command will generate the results for all recipies:
bitbake world -f -c distro_check

Signed-off-by: Nitin A Kamble <nitin.a.kamble@intel.com>

meta/classes/utility-tasks.bbclass

@@ -95,3 +95,25 @@ do_buildall() {
 	:
 }
 
+addtask distro_check after do_distro_check
+do_distro_check[nostamp] = "1"
+python do_distro_check() {
+    """checks if the package is present in other public Linux distros"""
+    import oe.distro_check as dc
+    localdata = bb.data.createCopy(d)
+    bb.data.update_data(localdata)
+
+    tmpdir = bb.data.getVar('TMPDIR', localdata, 1)
+    distro_check_dir = os.path.join(tmpdir, "distro_check")
+    datetime = bb.data.getVar('DATETIME', localdata, 1)
+
+    # if distro packages list data is old then rebuild it 
+    dc.update_distro_data(distro_check_dir, datetime)
+
+    # do the comparison
+    result = dc.compare_in_distro_packages_list(distro_check_dir, d)
+
+    # save the results
+    dc.save_distro_check_result(result, datetime, d)
+}
+