Clarify description for ServerTokens (thanks Erwann), and the
  ScriptInterpreterSource (couldn't help but notice an issue) directives.

PR: 6676
Submitted by:	Erwann Corvellec <erwann.corvellec@britimmo.com>
Reviewed by:	William Rowe


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@86625 13f79535-47bb-0310-9956-ffa450edef68