[Linux] Don't strip binaries, even when building release, unless packaging. Makes quick debugging in the dev checkout easier.

This may need more work if we want to support building an 'install' target, bypassing packaging, but I never hear of anyone doing that.  I'll address it if needed.

indra/newview/viewer_manifest.py

@@ -1147,7 +1147,8 @@ class LinuxManifest(ViewerManifest):
 
     def is_packaging_viewer(self):
         super(LinuxManifest, self).is_packaging_viewer()
-        return True # We always want a packaged viewer even without archive.
+        return 'package' in self.args['actions']
+
 
     def do(self, *actions):
         super(LinuxManifest, self).do(*actions)