upgrading package: bison 2.1 -> 2.2; auto adapt "example" removal replacing patching with substitution

bison/bison.patch

@@ -1,15 +1,3 @@
-Index: Makefile.in
---- Makefile.in.orig	2005-09-17 00:57:55 +0200
-+++ Makefile.in	2005-09-21 08:31:58 +0200
-@@ -234,7 +234,7 @@
- sysconfdir = @sysconfdir@
- target_alias = @target_alias@
- ACLOCAL_AMFLAGS = -I m4
--SUBDIRS = config po runtime-po lib data src doc examples tests
-+SUBDIRS = config po runtime-po lib data src doc tests
- aclocal_DATA = m4/bison-i18n.m4
- EXTRA_DIST = GNUmakefile Makefile.cfg Makefile.maint \
-   OChangeLog PACKAGING
 Index: lib/timevar.c
 --- lib/timevar.c.orig	2005-07-24 09:24:22 +0200
 +++ lib/timevar.c	2005-09-21 08:30:28 +0200

bison/bison.spec

@@ -23,7 +23,7 @@
 ##
 
 #   package versions
-%define       V_new      2.1
+%define       V_new      2.2
 %define       V_old      1.35
 
 #   package information
@@ -37,7 +37,7 @@ Class:        CORE
 Group:        Language
 License:      GPL
 Version:      %{V_new}
-Release:      20050921
+Release:      20060520
 
 #   list of sources
 Source0:      ftp://ftp.gnu.org/gnu/bison/bison-%{V_new}.tar.gz
@@ -78,6 +78,9 @@ AutoReqProv:  no
     %setup -q -c -n bison-%{V_new}
     %patch -p0 -d bison-%{V_new}
     %setup -q -T -D -a 1
+    %{l_shtool} subst \
+        -e 's;^\( *SUBDIRS = .*\) examples\(.*\)$;\1\2;' \
+        Makefile.in
 
 %build
     ( cd bison-%{V_new}