Handle HYDRA_EMAIL_TEMPLATES that are paths

Dependencies

• [2] LDICTHWY Use Template::Toolkit to generate email messages
• [*] 5EQYVRWE Add a plugin mechanism
• [*] QDJRQIFF If multiple dependent builds fail, send a single email

Change contents

• edit in src/lib/Hydra/Plugin/EmailNotification.pm at line 15
  [5.34]

  [5.37]
  + use FileHandle;
• edit in src/lib/Hydra/Plugin/EmailNotification.pm at line 96
  [2.1536]

  [2.1536]
  + if (-e $template) {

  + my $fh = FileHandle->new($template, "r");

  + if ($fh) {

  + $template = $fh;

  + }

  + }
• edit in src/lib/Hydra/Plugin/EmailNotification.pm at line 105
  [4.2264]

  [2.1646]
  + if (ref($template) eq "FileHandle") {

  + $template->close();

  + }

  +