Schema: Increase the length of wp_options.option_name.

It's pretty easy to run over the `option_name` length, which causes undefined behaviour when inserting and retrieving options. Increasing the length from `VARCHAR(64)` to `VARCHAR(191)` significantly reduces the risk of this occurring.

Because `option_name` has a `UNIQUE` index, we can only increase it to 191 characters, rather than 255. The index can only use a prefix of 191 characters, so will incorrectly restrict long different strings that have the same prefix, if we make the column longer.

Props scribu, OriginalEXE, khromov, MikeHansenMe, netweb, pento.

Fixes #13310.


Built from https://develop.svn.wordpress.org/trunk@34030


git-svn-id: http://core.svn.wordpress.org/trunk@33999 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/version.php

@@ -4,14 +4,14 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.4-alpha-34028';
+$wp_version = '4.4-alpha-34030';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.
  *
  * @global int $wp_db_version
  */
-$wp_db_version = 33056;
+$wp_db_version = 34030;
 
 /**
  * Holds the TinyMCE version