fix multilib issues by cleaning up auto-hacks

Newly upstream started to use 2.4.2.248 pre-release version of an
obsolescent release of libtool, which turned into weird
circumstances so 'make install' installed libtool script wrappers
instead of the built binaries.

Ideally we would drop re-autotooling, but we still need that for
some of the patches (TODO?), but also upstream does some hacks
which we should protect against (TODO: report).

Drop the ./configure --enable-ltdllib option which was no-op for
quite some time.

Resolves: rhbz#1546921
Version: 2.3.5-2

unixODBC.spec

@@ -1,7 +1,7 @@
 Summary: A complete ODBC driver manager for Linux
 Name: unixODBC
 Version: 2.3.5
-Release: 1%{?dist}
+Release: 2%{?dist}
 Group: System Environment/Libraries
 URL: http://www.unixODBC.org/
 # Programs are GPL, libraries are LGPL, except News Server library is GPL.
@@ -49,26 +49,17 @@ chmod 0644 doc/ProgrammerManual/Tutorial/*.html
 chmod 0644 doc/lst/*
 chmod 0644 include/odbcinst.h
 
-# Blow away the embedded libtool and replace with build system's libtool.
-# (We will use the installed libtool anyway, but this makes sure they match.)
-rm -rf config.guess config.sub install-sh ltmain.sh libltdl depcomp missing compile
-# this hack is so we can build with either libtool 2.2 or 1.5
-libtoolize --install --copy || libtoolize --copy
+autoreconf -vfi
+
 
 %build
-
-aclocal
-automake --add-missing
-autoheader
-autoconf
-
 # unixODBC 2.2.14 is not aliasing-safe
 CFLAGS="%{optflags} -fno-strict-aliasing"
 CXXFLAGS="$CFLAGS"
 export CFLAGS CXXFLAGS
 
 %configure --with-gnu-ld=yes --enable-threads=yes \
-	--enable-drivers=yes --enable-driverc=yes --enable-ltdllib
+	--enable-drivers=yes --enable-driverc=yes
 
 # Get rid of the rpaths
 sed -i 's|^hardcode_libdir_flag_spec=.*|hardcode_libdir_flag_spec=""|g' libtool
@@ -134,6 +125,9 @@ done
 %postun -p /sbin/ldconfig
 
 %changelog
+* Tue Feb 20 2018 Pavel Raiskup <praiskup@redhat.com> - 2.3.5-2
+- cleanup autotool hacks
+
 * Mon Feb 19 2018 Jan Staněk <jstanek@redhat.com> - 2.3.5-1
 - Update to version 2.3.5