Commits on Jun 26, 2018

1. Make any2array return empty array on empty string …

   any2array currently returns an array containing the empty string, when
   given the empty string.
   
   Example:
   ```
   any2array('').each |$e| {
     notice('I\'m not empty!')
   }
   ```
   
   This is counter intuitive, as Puppet considers the empty string as
   Strings nil value, for which the equivalent Array is the empty array.
   
   This especially apparent when doing a lookup in a map with a non
   existing key.
   
   Example:
   ```
   $config = {}
   any2array($config['test']).each |$e| {
     notice('I\'m not empty!')
   }
   ```
   
   Both these cases print the string "I'm not empty", this PR fixes that.

   Jesper Brix Rosenkilde committed Jun 26, 2018
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