Removes support for MSVC 7.1 from the scons scripts.

scons/SConscript

@@ -110,13 +110,6 @@ if env['PLATFORM'] == 'win32':
   env.Append(CCFLAGS=[
       '-wd4127',  # Disables warning "conditional expression is constant",
                   # triggered by VC 8.0's own STL header <list>.
-      '-wd4702',  # Disables warning "unreachable code", triggered by VC
-                  # 7.1's own STL header <xtree>.
-      '-wd4675',  # Disables warning "resolved overload was found by
-                  # argument-dependent lookup" generated by VC 7.1.
-                  # It just says that VC 7.1 fixed a bug in earlier
-                  # versions of VC so the code behavior will be
-                  # different than compiled with VC 6.0, for example.
       ])
 
 # Note: The relative paths in SConscript files are relative to the location

scons/SConstruct

@@ -39,7 +39,7 @@
 # where frequently used command-line options include:
 #     -h               print usage help.
 #     BUILD=all        build all build types.
-#     BUILD=win-opt    build the given build type.
+#     BUILD=win-opt8   build the given build type.
 
 EnsurePythonVersion(2, 3)
 
@@ -88,11 +88,8 @@ sconstruct_helper.Initialize(build_root_path='..',
 
 win_base = sconstruct_helper.MakeWinBaseEnvironment()
 
-if win_base.get('MSVS_VERSION', None) == '7.1':
-  sconstruct_helper.EnvCreator.WithExceptions(win_base)
-
-sconstruct_helper.MakeWinDebugEnvironment(win_base, 'win-dbg')
-sconstruct_helper.MakeWinOptimizedEnvironment(win_base, 'win-opt')
+sconstruct_helper.MakeWinDebugEnvironment(win_base, 'win-dbg8')
+sconstruct_helper.MakeWinOptimizedEnvironment(win_base, 'win-opt8')
 
 sconstruct_helper.ConfigureGccEnvironments()