Prepare 3.19.4

NEWS

+Overview of changes in 3.19.4
+=============================
+
+* Bugs fixed:
+ 758475 Examples fail if backend is disabled
+ 759571 build: Add Vala bindings
+ 759828 google: Do not support chat when telepathy is disabled
+ 760189 Don't require Telepathy when built with --disable-telepathy
+
+* Updated translations:
+ Aragonese
+ German
+ Portuguese (Brazilian)
+ Russian
+ Vietnamese
+
+
 Overview of changes in 3.19.3
 =============================
 

configure.ac

 m4_define([goa_major_version], [3])
 m4_define([goa_minor_version], [19])
-m4_define([goa_micro_version], [3])
+m4_define([goa_micro_version], [4])
 m4_define([goa_nano_version], [0])
 
 m4_define([goa_base_version],