Bug #12373393 PB2 SHOULD ALLOW TO CREATE COLLECTIONS AS SUPER SET OF EXISTING COLLECTIONS

Let CMake parse files with a ".in" suffix containing includes
    Added default.release.in to replace default.release
    Explained in README
    New patch: replace 'include' with '#include' to avoid accidental matches

mysql-test/collections/README

@@ -28,3 +28,11 @@ these steps:
 5) The commands from the collection are run line by line via execv() or
    similar system calls. They are not run as a shell script. Shell 
    expansions are not guaranteed to work and most likely won't.
+
+The directory may contain collections that are "super sets" of others,
+identified by a file name suffix ".in". These files may contain lines
+"#include <filename>", or lines with mysql-test-run.pl invocations.
+CMake will create a new file without the .in suffix where
+the include lines are replaced with the contents of the referred
+file. Filename is local to the collections directory, and includes do
+not nest.

mysql-test/collections/default.release.in

@@ -1,3 +1,9 @@
+# This file contains the old default.release, the plan is to replace that 
+# with something like the below (remove space after #):
+
+# include default.daily
+# include default.weekly
+
 perl mysql-test-run.pl --force --timer --parallel=auto --experimental=collections/default.experimental --comment=debug      --vardir=var-debug                       --skip-ndbcluster --skip-rpl --report-features --debug-server
 perl mysql-test-run.pl --force --timer --parallel=auto --experimental=collections/default.experimental --comment=normal     --vardir=var-normal                      --skip-ndbcluster --report-features
 perl mysql-test-run.pl --force --timer --parallel=auto --experimental=collections/default.experimental --comment=ps         --vardir=var-ps                          --skip-ndbcluster --ps-protocol