CXX-2326 Can't disable zlib with --with-zlib=no

Author: derickr

build/autotools/CheckZlib.m4

@@ -16,8 +16,8 @@ AS_IF([test "x${with_zlib}" = xauto -o "x${with_zlib}" = xsystem], [
       ])
    ])
 ], [
-   AS_IF([test "x${with_zlib}" != xbundled], [
-      AC_MSG_ERROR([Invalid --with-zlib option: must be system, bundled, or auto.])
+   AS_IF([test "x${with_zlib}" != xbundled -a "x${with_zlib}" != xno], [
+      AC_MSG_ERROR([Invalid --with-zlib option: must be system, bundled, auto, or no.])
    ])
 ])