[vala/0.34] vala: Don't warn about deprecated symbols if installed_version is older

[Rico Tzschichholz <ricotz src gnome org>]

commit 04ad7a6ab2b0a8e97c52b13f4c80868d8fa10aed
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Fri May 5 08:19:28 2017 +0200

    vala: Don't warn about deprecated symbols if installed_version is older

 vala/valaversionattribute.vala |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/vala/valaversionattribute.vala b/vala/valaversionattribute.vala
index 9c3df39..4af5da2 100644
--- a/vala/valaversionattribute.vala
+++ b/vala/valaversionattribute.vala
@@ -150,7 +150,9 @@ public class Vala.VersionAttribute {
 
                // deprecation:
                if (symbol.external_package && deprecated) {
-                       if (!CodeContext.get ().deprecated) {
+                       string? package_version = symbol.source_reference.file.installed_version;
+
+                       if (!CodeContext.get ().deprecated && (package_version == null || deprecated_since == 
null || VersionAttribute.cmp_versions (package_version, deprecated_since) >= 0)) {
                                Report.deprecated (source_ref, "%s %s%s".printf (symbol.get_full_name (), 
(deprecated_since == null) ? "is deprecated" : "has been deprecated since %s".printf (deprecated_since), 
(replacement == null) ? "" : ". Use %s".printf (replacement)));
                        }
                        result = true;