Set default time-zone to UTC for strtotime-based tests. This both suppresses a PHP warning for unconfigured PHP systems and fixes Bug #18963.
Set default time-zone to UTC for strtotime-based tests. This both suppresses a PHP warning for unconfigured PHP systems and fixes Bug #18963.

git-svn-id: 238cecb930ce893fc9dbb348c2faf7e702d02354@320062 c90b9560-bf6c-de11-be94-00142212c4b1

pear/Crypt_GPG,pear/Crypt_GPG,gauthierm/Crypt_GPG,alecpl/Crypt_GPG