Fix shell build on Solaris and cleanup Solaris SignalSender Run()

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 457 matching lines @@
       'LIBS':         ['pthread'],
     },
     'os:macos': {
       'LIBS':         ['pthread'],
     },
     'os:freebsd': {
       'LIBPATH' :     ['/usr/local/lib'],
       'LIBS':         ['execinfo', 'pthread']
     },
     'os:solaris': {
+      # On Solaris, to get isinf, INFINITY, fpclassify and other macros one
+      # needs to define __C99FEATURES__.
+      'CPPDEFINES': ['__C99FEATURES__'],
       'LIBPATH' :     ['/usr/local/lib'],
       'LIBS':         ['m', 'pthread', 'socket', 'nsl', 'rt'],
       'LINKFLAGS':    ['-mt']
     },
     'os:openbsd': {
       'LIBPATH' :     ['/usr/local/lib'],
       'LIBS':         ['execinfo', 'pthread']
     },
     'os:win32': {
       'LIBS':         ['winmm', 'ws2_32']
@@ skipping 992 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()