Replaced E_DEPRECATED by E_USER_DEPRECATED...


| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | ---
| Fixed tickets | ---
| Refs tickets  | ---
| License       | MIT
| Doc PR        | ---

...to match the if here: https://github.com/zikula/core/blob/1.3/src/lib/legacy/util/LogUtil.php#L433