Fix help_drv_*.t tests broken by the command line syntax change.

configure.ac

@@ -264,11 +264,13 @@ AM_CONDITIONAL(USE_ORACLE, test x$with_oracle != xno)
 
 AS_IF([test x$with_pgsql != xno], [
     AC_CHECK_PGSQL([$with_pgsql])
+    USE_PGSQL=1
     AC_DEFINE(USE_PGSQL,1,[Define to 1 if you want to compile with PostgreSQL support])
     AC_SUBST([PGSQL_LIBS])
     AC_SUBST([PGSQL_CFLAGS])
 ])
 AM_CONDITIONAL(USE_PGSQL, test x$with_pgsql != xno)
+AC_SUBST([USE_PGSQL])
 
 # Check for libaio
 AC_CHECK_AIO

tests/include/config.sh.in

@@ -21,3 +21,4 @@
 export SBTEST_VERSION_STRING="sysbench @PACKAGE_VERSION@@SB_GIT_SHA@"
 export SBTEST_VERSION="@PACKAGE_VERSION@"
 export SBTEST_HAS_MYSQL=@USE_MYSQL@
+export SBTEST_HAS_PGSQL=@USE_PGSQL@

tests/t/help_drv_mysql.t

@@ -1,11 +1,11 @@
 Skip test if the MySQL driver is not available.
 
-  $ if ! sysbench help | sed -n '/Compiled-in database drivers:/,/^$/p' | grep mysql > /dev/null 2>&1
+  $ if [ -z "$SBTEST_HAS_MYSQL" ]
   > then
   >   exit 80
   > fi
 
-  $ sysbench help | sed -n '/mysql options:/,/^$/p'
+  $ sysbench --help | sed -n '/mysql options:/,/^$/p'
   mysql options:
     --mysql-host=[LIST,...]          MySQL server host [localhost]
     --mysql-port=[LIST,...]          MySQL server port [3306]

tests/t/help_drv_pgsql.t

@@ -1,11 +1,11 @@
 Skip test if the PostgreSQL driver is not available.
 
-  $ if ! sysbench help | sed -n '/Compiled-in database drivers:/,/^$/p' | grep pgsql > /dev/null 2>&1
+  $ if [ -z "$SBTEST_HAS_PGSQL" ]
   > then
   >   exit 80
   > fi
 
-  $ sysbench help | sed -n '/pgsql options:/,/^$/p'
+  $ sysbench --help | sed -n '/pgsql options:/,/^$/p'
   pgsql options:
     --pgsql-host=STRING     PostgreSQL server host [localhost]
     --pgsql-port=N          PostgreSQL server port [5432]