Fix bug#14318456 SPEC FILE DOES NOT RUN THE TEST SUITE DURING RPM BUILD

Add a macro "runselftest" to the spec file for RPM builds.

If its value is 1 (the default), the test suite will be run during
the RPM build.
To prevent that, add this to the rpmbuild command line:
    --define "runselftest 0"
Failures of the test suite will NOT make the RPM build fail!


support-files/mysql.spec.sh:
  Add the "runselftest" macro following the model provided by RedHat.
  
  This code is similar to what we plan to use for ULN RPMs.

support-files/mysql.spec.sh

@@ -252,6 +252,9 @@ Vendor:         %{mysql_vendor}
 Provides:       msqlormysql MySQL-server mysql
 BuildRequires:  %{distro_buildreq}
 
+# Regression tests may take a long time, override the default to skip them 
+%{!?runselftest:%global runselftest 1}
+
 # Think about what you use here since the first step is to
 # run a rm -rf
 BuildRoot:    %{_tmppath}/%{name}-%{version}-build
@@ -403,6 +406,16 @@ For a description of MySQL see the base MySQL RPM or http://www.mysql.com/
 ##############################################################################
 %build
 
+# Fail quickly and obviously if user tries to build as root
+%if %runselftest
+    if [ x"`id -u`" = x0 ]; then
+        echo "The MySQL regression tests may fail if run as root."
+        echo "If you really need to build the RPM as root, use"
+        echo "--define='runselftest 0' to skip the regression tests."
+        exit 1
+    fi
+%endif
+
 # Be strict about variables, bail at earliest opportunity, etc.
 set -eu
 
@@ -480,6 +493,13 @@ mkdir release
   make ${MAKE_JFLAG} VERBOSE=1
 )
 
+%if %runselftest
+  MTR_BUILD_THREAD=auto
+  export MTR_BUILD_THREAD
+
+  (cd release && make test-bt-fast || true)
+%endif
+
 ##############################################################################
 %install
 
@@ -1146,6 +1166,14 @@ echo "====="                                     >> $STATUS_HISTORY
 # merging BK trees)
 ##############################################################################
 %changelog
+* Tue Jul 24 2012 Joerg Bruehe <joerg.bruehe@oracle.com>
+
+- Add a macro "runselftest":
+  if set to 1 (default), the test suite will be run during the RPM build;
+  this can be oveeridden via the command line by adding
+      --define "runselftest 0"
+  Failures of the test suite will NOT make the RPM build fail!
+  
 * Wed Sep 28 2011 Joerg Bruehe <joerg.bruehe@oracle.com>
 
 - Fix duplicate mentioning of "mysql_plugin" and its manual page,