build: add serial commas to messages in configure script

PR-URL: nodejs#17464
Reviewed-By: Gireesh Punathil <[email protected]>
Reviewed-By: Tobias Nießen <[email protected]>
Reviewed-By: Anna Henningsen <[email protected]>
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: Daniel Bevenius <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Jon Moss <[email protected]>
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Ruben Bridgewater <[email protected]>

configure

@@ -146,7 +146,7 @@ parser.add_option("--enable-vtune-profiling",
     dest="enable_vtune_profiling",
     help="Enable profiling support for Intel VTune profiler to profile "
          "JavaScript code executed in nodejs. This feature is only available "
-         "for x32, x86 and x64 architectures.")
+         "for x32, x86, and x64 architectures.")
 
 
 parser.add_option("--link-module",
@@ -883,7 +883,7 @@ def configure_node(o):
     o['variables']['node_enable_v8_vtunejit'] = b(options.enable_vtune_profiling)
   elif options.enable_vtune_profiling:
     raise Exception(
-       'The VTune profiler for JavaScript is only supported on x32, x86 and x64 '
+       'The VTune profiler for JavaScript is only supported on x32, x86, and x64 '
        'architectures.')
   else:
     o['variables']['node_enable_v8_vtunejit'] = 'false'