Allow multiple -f options.

Make pgbench "script driven" to eliminate hard coded transaction
scenario. (Tatsuo Ishii)

contrib/pgbench/README.pgbench

@@ -1,4 +1,4 @@
-pgbench README		2005/09/29 Tatsuo Ishii
+pgbench README		2005/10/04 Tatsuo Ishii
 
 o What is pgbench?
 
@@ -166,6 +166,9 @@ o -f option
   command consists of multiple lines are not supported. Empty lines
   and lines begging with "--" will be ignored.
 
+  Multiple -f options are allowed. In this case each transaction is
+  assigned randomly chosen script.
+
   SQL commands can include "meta command" which begins with "\" (back
   slash). A meta command takes some arguments separted by white
   spaces. Currently following meta command is supported:

contrib/pgbench/README.pgbench_jis

@@ -180,10 +180,12 @@ pgbench $B$G$O!$0J2<$N%7!<%1%s%9$rA4It40N;$7$F(B1$B%H%i%s%6%/%7%g%s$H?t$($F(
 
 $B"#F~NO%U%!%$%k$N%U%)!<%^%C%H(B
 
-pgbench $B$G$O!$(B-f $B%*%W%7%g%s$r;XDj$7$F%H%i%s%6%/%7%g%s$K4^$^$l$k(B SQL $B%3(B
-$B%^%s%I$NFbMF$r5-=R$7$?%U%!%$%k$rFI$_9~$`$3$H$,$G$-$^$9!%F~NO%U%!%$%k$K(B
-$B$O(B 1 $B9T$K$D$-(B 1 $B$D$N%3%^%s%I$r5-=R$7$^$9!%6u9T$OL5;k$5$l!$Fs=E%O%$%U%s(B
-$B$G;O$^$k9T$O%3%a%s%H$r0UL#$7$^$9!%(B
+-f $B%*%W%7%g%s$r;XDj$7$F%H%i%s%6%/%7%g%s$K4^$^$l$k(B SQL $B%3%^%s%I$NFbMF$r(B
+$B5-=R$7$?%U%!%$%k$rFI$_9~$`$3$H$,$G$-$^$9!%F~NO%U%!%$%k$K$O(B 1 $B9T$K$D$-(B 
+1 $B$D$N%3%^%s%I$r5-=R$7$^$9!%6u9T$OL5;k$5$l!$Fs=E%O%$%U%s$G;O$^$k9T$O%3(B
+$B%a%s%H$r0UL#$7$^$9!%(B
+
+-f $B%*%W%7%g%s$OJ#?t;XDj$G$-$^$9!%$3$N>l9g$O(B
 
 $B%3%^%s%I$K$O!$(BSQL $B%3%^%s%I$K2C$(!$%P%C%/%9%i%C%7%e$G;O$^$k%a%?%3%^%s%I(B
 $B$r5-=R$G$-$^$9!%%a%?%3%^%s%I$O(B pgbench $B<+?H$K$h$C$F<B9T$5$l$^$9!%%a%?(B