Update pgindent docs to use maintainer-clean.

Author: bmomjian

src/tools/pgindent/README

@@ -1,4 +1,4 @@
-$PostgreSQL: pgsql/src/tools/pgindent/README,v 1.35 2010/02/26 13:50:34 momjian Exp $
+$PostgreSQL: pgsql/src/tools/pgindent/README,v 1.36 2010/02/26 15:42:36 momjian Exp $
 
 pgindent
 ========
@@ -8,23 +8,24 @@ This can format all PostgreSQL *.c and *.h files, but excludes *.y, and
 
 1) Change directory to the top of the build tree.
 
-1) Download the typedef file from the builfarm:
+2) Download the typedef file from the builfarm:
 
 	wget -O src/tools/pgindent/typedefs.list http://www.pgbuildfarm.org/cgi-bin/typedefs.pl
 
-2) Download a fresh CVS checkout.  This will guarantee you do not have any
-   derived bison or flex C files.  (pgindent has trouble with one of the
-   flex macros.)
+3) Clean out all derived files (pgindent has trouble with one of the
+   flex macros):
 
-3) Run pgindent:
+	gmake maintainer-clean
+
+4) Run pgindent:
 
 	find . -name '*.[ch]' -type f -print |
 	egrep -v '/s_lock.h|/ecpg/test/expected/|/snowball/libstemmer/' |
 	xargs -n100 pgindent src/tools/pgindent/typedefs.list
 
-4) Remove any files that generate errors.
+5) Remove any files that generate errors.
 
-5) Do a full test build.
+6) Do a full test build.
 
 
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