[gcab] Add missing Since for gcab_cabinet_get_signature

[Marc-Andre Lureau <malureau src gnome org>]

commit b044f12e521cd3aa8372d447c1788a066be7751a
Author: Marc-André Lureau <marcandre lureau gmail com>
Date:   Mon Mar 9 14:11:54 2015 +0100

    Add missing Since for gcab_cabinet_get_signature

 docs/reference/gcab-docs.sgml.in |    1 +
 libgcab/gcab-cabinet.c           |    1 +
 2 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/docs/reference/gcab-docs.sgml.in b/docs/reference/gcab-docs.sgml.in
index dd0a5e2..355f319 100644
--- a/docs/reference/gcab-docs.sgml.in
+++ b/docs/reference/gcab-docs.sgml.in
@@ -37,5 +37,6 @@
   </index>
 
   <xi:include href="xml/annotation-glossary.xml"><xi:fallback /></xi:include>
+  <xi:include href="xml/api-index-0.5.xml"><xi:fallback /></xi:include>
   <xi:include href="xml/api-index-2.28.xml"><xi:fallback /></xi:include>
 </book>
diff --git a/libgcab/gcab-cabinet.c b/libgcab/gcab-cabinet.c
index 9aadc79..f958c6e 100644
--- a/libgcab/gcab-cabinet.c
+++ b/libgcab/gcab-cabinet.c
@@ -512,6 +512,7 @@ gcab_cabinet_extract_simple (GCabCabinet *cabinet,
  *
  * Lookup the cabinet authenticode signature if any.
  *
+ * Since: 0.5
  * Returns: the array containing the PKCS#7 signed data or %NULL if
  * none found or error.
  **/