Use the correct soname when linking together the preparser shared lib.

SConstruct

 # Copyright 2011 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 1354 matching lines @@
     library = env.StaticLibrary(library_name, object_files)
     preparser_library = env.StaticLibrary(preparser_library_name,
                                           preparser_files)
   else:
     # There seems to be a glitch in the way scons decides where to put
     # PDB files when compiling using MSVC so we specify it manually.
     # This should not affect any other platforms.
     pdb_name = library_name + '.dll.pdb'
     library = env.SharedLibrary(library_name, object_files, PDB=pdb_name)
     preparser_pdb_name = preparser_library_name + '.dll.pdb';
+    preparser_soname = 'lib' + preparser_library_name + '.so';
     preparser_library = env.SharedLibrary(preparser_library_name,
                                           preparser_files,
-                                          PDB=preparser_pdb_name)
+                                          PDB=preparser_pdb_name,
+                                          SONAME=preparser_soname)
   context.library_targets.append(library)
   context.library_targets.append(preparser_library)
 
   d8_env = Environment(tools=tools)
   d8_env.Replace(**context.flags['d8'])
   context.ApplyEnvOverrides(d8_env)
   shell = d8_env.Program('d8' + suffix, object_files + shell_files)
   context.d8_targets.append(shell)
 
   for sample in context.samples:
@@ skipping 87 matching lines @@
 # version of scons.  Also, there's a bug in some revisions that
 # doesn't allow this flag to be set, so we swallow any exceptions.
 # Lovely.
 try:
   SetOption('warn', 'no-deprecated')
 except:
   pass
 
 
 Build()