Description:
------------
On some systems FreeTDS include files are being installed on $prefix/include/freetds instead of $prefix/include where configure is trying to find them.

I have modified the ext/pdo_dblib/config.m4 to also search that directory with the following patch:

--- config.m4   2005-10-31 10:08:18.000000000 +0200
+++ config.m4.new       2005-10-31 10:17:30.000000000 +0200
@@ -10,13 +10,17 @@
 
 if test "$PHP_PDO_DBLIB" != "no"; then
 
-  PDO_FREETDS_INSTALLATION_DIR=""
   if test "$PHP_PDO_DBLIB" = "yes"; then
 
     for i in /usr/local /usr; do
       if test -f $i/include/tds.h; then
         PDO_FREETDS_INSTALLATION_DIR=$i
+        PDO_FREETDS_INCLUDE_DIR=$i/include
         break
+      elif test -f $i/include/freetds/tds.h; then
+        PDO_FREETDS_INSTALLATION_DIR=$i
+        PDO_FREETDS_INCLUDE_DIR=$i/include/freetds
+        break;
       fi
     done
 
@@ -28,6 +32,10 @@
 
     if test -f $PHP_PDO_DBLIB/include/tds.h; then
       PDO_FREETDS_INSTALLATION_DIR=$PHP_PDO_DBLIB
+      PDO_FREETDS_INCLUDE_DIR=$PHP_PDO_DBLIB/include
+    elif test -f $PHP_PDO_DBLIB/include/freetds/tds.h; then
+      PDO_FREETDS_INSTALLATION_DIR=$PHP_PDO_DBLIB
+      PDO_FREETDS_INCLUDE_DIR=$PHP_PDO_DBLIB/include/freetds
     else
       AC_MSG_ERROR(Directory $PHP_PDO_DBLIB is not a FreeTDS installation directory)
     fi
@@ -41,11 +49,9 @@
      AC_MSG_ERROR(Could not find $PDO_FREETDS_INSTALLATION_DIR/$PHP_LIBDIR/libtds.[a|so])
   fi
 
-  PDO_DBLIB_INCDIR=$PDO_FREETDS_INSTALLATION_DIR/include
-  PDO_DBLIB_LIBDIR=$PDO_FREETDS_INSTALLATION_DIR/$PHP_LIBDIR
+  PHP_ADD_INCLUDE($PDO_FREETDS_INCLUDE_DIR)
+  PHP_ADD_LIBRARY_WITH_PATH(sybdb, $PDO_FREETDS_INSTALLATION_DIR/$PHP_LIBDIR, PDO_DBLIB_SHARED_LIBADD)
 
-  PHP_ADD_INCLUDE($PDO_DBLIB_INCDIR)
-  PHP_ADD_LIBRARY_WITH_PATH(sybdb, $PDO_DBLIB_LIBDIR, PDO_DBLIB_SHARED_LIBADD)
   ifdef([PHP_CHECK_PDO_INCLUDES],
   [
     PHP_CHECK_PDO_INCLUDES