for mysql-test: fix mysqlhotcopy script to return a predictable exit code

mysql-test/include/mysqlhotcopy.inc

@@ -109,7 +109,7 @@ DROP DATABASE hotcopy_save;
 --replace_result $MYSQLD_DATADIR MYSQLD_DATADIR
 --list_files $MYSQLD_DATADIR/hotcopy_save
 --replace_result $MASTER_MYSOCK MASTER_MYSOCK
---error 9,11,2304
+--error 1
 --exec $MYSQLHOTCOPY --quiet -S $MASTER_MYSOCK -u root hotcopy_test hotcopy_save
 --replace_result $MASTER_MYSOCK MASTER_MYSOCK
 --exec $MYSQLHOTCOPY --quiet --allowold -S $MASTER_MYSOCK -u root hotcopy_test hotcopy_save

scripts/mysqlhotcopy.sh

@@ -56,6 +56,9 @@ WARNING: THIS PROGRAM IS STILL IN BETA. Comments/patches welcome.
 
 # Documentation continued at end of file
 
+# fix CORE::GLOBAL::die to return a predictable exit code
+BEGIN { *CORE::GLOBAL::die= sub { warn @_; exit 1; }; }
+
 my $VERSION = "1.23";
 
 my $opt_tmpdir = $ENV{TMPDIR} || "/tmp";