- Backport bdb disabling fix

OBS-URL: https://build.opensuse.org/package/show/Base:System/rpm?expand=0&rev=527

disable_bdb.diff

@@ -0,0 +1,15 @@
+--- configure.ac.orig	2020-01-17 12:25:06.451387587 +0000
++++ configure.ac	2020-01-17 12:25:17.707357939 +0000
+@@ -537,11 +537,11 @@ AC_ARG_ENABLE([bdb],
+               [enable_bdb="$enableval"],
+               [enable_bdb=yes])
+ 
++have_bdb="no"
+ AS_IF([test "x$enable_bdb" != "xno"], [
+   if [ test -x db/dist/configure ]; then
+     have_bdb="internal"
+   else
+-    have_bdb="no"
+     AC_CHECK_HEADERS([db.h],[
+       AC_PREPROC_IFELSE([
+         AC_LANG_SOURCE([