Description:
------------
./configure script no longer finds /usr/lib/libldap.dylib on 
Mac OS X

This must be a result of the following change to the 
configure script in 5.1.3RC2 relative to 5.1.2:

@@ -3876,9 +3874,6 @@
   *hpux*)
     SHLIB_SUFFIX_NAME=sl
     ;;
-  *darwin*)
-    SHLIB_SUFFIX_NAME=dylib
-    ;;
   esac

 PHP_SAPI=default



Reproduce code:
---------------
gnutar xfj php-5.1.3RC2.tar.bz2
cd php-5.1.3RC2
./configure --with-ldap=/usr 



Expected result:
----------------
Expected same results as with php-5.1.2, where
./configure script completed without error

Actual result:
--------------
...
checking for InterBase support... no
checking for LDAP support... yes
checking for LDAP Cyrus SASL support... no
configure: error: Cannot find ldap libraries in /usr/lib.