Description: update doc for python3
Forwarded: https://github.com/AdaCore/gprbuild/pull/89
Author: Nicolas Boulenguez <nicolas@debian.org>

--- a/doc/share/conf.py
+++ b/doc/share/conf.py
@@ -43,7 +43,7 @@
                   gpr_version_content)
     if m:
         return m.group(1).strip()
-    print 'cannot find GPR version in ' + gpr_version_spec
+    print ('cannot find GPR version in ' + gpr_version_spec)
     return 'unknown'
 
 # Exclude sources that are not part of the current documentation
@@ -51,7 +51,7 @@
 for d in os.listdir(root_source_dir):
     if d not in ('share', doc_name, doc_name + '.rst'):
         exclude_patterns.append(d)
-        print 'ignoring %s' % d
+        print ('ignoring %s' % d)
 
 extensions = []
 templates_path = ['_templates']