[gimp] NEWS: add info about new --with-bug-report-url option.

[Jehan Pagès <jehanp src gnome org>]

commit c3eff6e8773040b2c3ad5b12af5264c827de8860
Author: Jehan <jehan girinstud io>
Date:   Tue May 15 00:46:02 2018 +0200

    NEWS: add info about new --with-bug-report-url option.

 NEWS |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)
---
diff --git a/NEWS b/NEWS
index 5d31ea0..ec19619 100644
--- a/NEWS
+++ b/NEWS
@@ -21,10 +21,14 @@ Plug-ins:
   - New plug-in for importing and exporting HEIF images.
   - Enable visibility of rasterized vector layer from PSD.
 
-  
 Translations:
 
   - Updated translations: Catalan, German, Greek, Hungarian, Italian,
     Polish, Russian, Swedish, Ukrainian.
   - New translation: Chinese (Taiwan)
 
+Build:
+
+  - Add a --with-bug-report-url configure option allowing packagers to
+    set the address of their own bug tracker. This address will be the
+    one opened by the debug dialog for reporting bugs.