VWR-20893: "class Linux_x86_64Manifest" missing from viewer_manifest.py Breaking linux 64-bit build.

(transplanted from 111a293c0e1c9062b1aa83dda7cf28aa22754930)

doc/contributions.txt

@@ -594,6 +594,7 @@ Teardrops Fall
 Techwolf Lupindo
 	SNOW-92
 	VWR-12385
+	VWR-20893
 tenebrous pau
 	VWR-247
 Tharax Ferraris

indra/newview/viewer_manifest.py

@@ -917,6 +917,13 @@ class Linux_i686Manifest(LinuxManifest):
             print "* Going strip-crazy on the packaged binaries, since this is a RELEASE build"
             self.run_command("find %(d)r/bin %(d)r/lib -type f | xargs --no-run-if-empty strip -S" % {'d': self.get_dst_prefix()} ) # makes some small assumptions about our packaged dir structure
 
+class Linux_x86_64Manifest(LinuxManifest):
+    def construct(self):
+        super(Linux_x86_64Manifest, self).construct()
+
+        # support file for valgrind debug tool
+        self.path("secondlife-i686.supp")
+
 ################################################################
 
 if __name__ == "__main__":