Description of problem:
semi-hardcoded db_incdir="$DBDIR/include" should be better handled for --with-db-dir and --with-db-inc instead of the current checks

Version-Release number of selected component (if applicable):
389-ds-base 1.2.2

How reproducible:


Steps to Reproduce:
1. Install db with include directory set to prefix/include/db4
2. ./configure --with-db=prefix --with-db-inc=prefix/include/db4
  
Actual results:
Aborted configure script

Expected results:
Configure script finished successfully and include directory correctly set on Makefiles

Additional info:
WARNING: EXTREMELY UGLY PATCH BELOW THIS POINT! This was just coded to test the validity of the bug and allow me to work on other stuff while this gets fixed upstream.

--- m4/db.m4.orig       2009-05-26 11:57:29.000000000 -0300
+++ m4/db.m4
@@ -43,7 +43,11 @@ AC_ARG_WITH(db, [  --with-db=PATH   Berk
     db_libdir="$DBDIR/lib"
     db_incdir="$DBDIR/include"
     if ! test -e "$db_incdir/db.h" ; then
-      AC_MSG_ERROR([$withval include dir not found])
+      if test -e "$db_incdir/db4/db.h" ; then
+        db_incdir="$DBDIR/include/db4"
+      else
+        AC_MSG_ERROR([$withval include dir not found])
+      fi
     fi
     db_inc="-I$db_incdir"
   else