Update libtool-2.4 recipe to work with autoconf-1.13

* liberate requirement on automake from 1.11 to generic, as there's hope
  that any automake equal or newer than 1.11 will do
* add patch for removing dependency to help2man which is being invoked
  to regenerate the manpages, which won't work and has become an error
  with automake-1.13
* move patches for 2.4 into a corresponding subfolder
* explictly list patches

sys-devel/libtool/libtool-2.4.recipe

@@ -9,6 +9,11 @@ CHECKSUM_MD5="b32b04148ecdd7344abc6fe8bd1bb021"
 REVISION="5"
 ARCHITECTURES="x86_gcc2 ?x86"
 
+PATCHES="
+	2.4/adjust_config_for_packaging.patch
+	2.4/remove_help2man_dependency.patch
+	"
+
 PROVIDES="
 	libtool = $portVersion compat >= 2.4
 	cmd:libtool = $portVersion compat >= 2.4
@@ -25,7 +30,7 @@ REQUIRES="
 	"
 BUILD_REQUIRES="
 	cmd:autoconf >= 2.62
-	cmd:aclocal >= 1.13
+	cmd:aclocal
 	cmd:autoheader >= 2.62
 	cmd:sed
 	"

sys-devel/libtool/patches/2.4/adjust_config_for_packaging.patch

@@ -1,3 +1,5 @@
+Adjust haiku configuration of upstream libtool for packaging.
+
 diff -ur libtool-2.4/libltdl/m4/libtool.m4 libtool-2.4/libltdl/m4/libtool.m4
 --- libtool-2.4/libltdl/m4/libtool.m4	2010-09-22 08:41:19.064749568 +0000
 +++ libtool-2.4/libltdl/m4/libtool.m4	2011-07-24 16:58:02.885260288 +0000

sys-devel/libtool/patches/2.4/remove_help2man_dependency.patch

@@ -0,0 +1,24 @@
+Remove dependency to help2man, which tries to regenerate the manpages.
+As the failure to use help2man has become an error with automake-1.13,
+we just use the manpages that come with the source.
+
+diff -ruwN libtool-2.4/Makefile.am libtool-2.4_haiku/Makefile.am
+--- libtool-2.4/Makefile.am	2010-09-21 09:07:22.038535168 +0200
++++ libtool-2.4_haiku/Makefile.am	2013-04-23 23:41:18.886833152 +0200
+@@ -322,16 +322,6 @@
+ 	  $(MAKEINFO) --no-headers $(MAKEINFOFLAGS) -o notes.txt notes.texi
+ 
+ dist_man1_MANS		= $(srcdir)/doc/libtool.1 $(srcdir)/doc/libtoolize.1
+-MAINTAINERCLEANFILES	+= $(dist_man1_MANS)
+-update_mans = \
+-  PATH=.$(PATH_SEPARATOR)$$PATH; export PATH; \
+-  $(HELP2MAN) --output=$@
+-$(srcdir)/doc/libtool.1: $(srcdir)/$(auxdir)/ltmain.sh
+-	$(update_mans) --help-option=--help-all libtool
+-$(srcdir)/doc/libtoolize.1: $(srcdir)/libtoolize.in
+-	$(update_mans) libtoolize
+-
+-
+ ## ------------- ##
+ ## Installation. ##
+ ## ------------- ##