Running grails WAR file as a regular Java application fails in Turkish locale

Running;

java -Dgrails.env=prod -jar build/libs/mywar-0.1.war

fails with message:

```
Caused by: java.lang.IllegalArgumentException: No enum constantails.util.Environment.PRODUCTİON
```

Obviously a capitalization issue in Turkish Locale due to i --> İ. :-(

I will try to submit a PR as soon as I am able to deploy the war file somehow to production.

Reproduce the failure with `java -Dgrails.env=prod -jar build/libs/mywar-0.1.war` under a Turkish locale, then trace the environment enum parsing reached by the WAR launcher. Done means the production environment is recognized without producing `PRODUCTİON`, with a regression test covering the Turkish locale.

Written by the indexing model from the issue text.