Update to SCons 1.2.0.

third_party/scons/scons-local/SCons/Tool/dvipdf.py

Index: third_party/scons/scons-local/SCons/Tool/dvipdf.py
===================================================================
--- third_party/scons/scons-local/SCons/Tool/dvipdf.py	(revision 7505)
+++ third_party/scons/scons-local/SCons/Tool/dvipdf.py	(working copy)
@@ -31,7 +31,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/dvipdf.py 3603 2008/10/10 05:46:45 scons"
+__revision__ = "src/engine/SCons/Tool/dvipdf.py 3842 2008/12/20 22:59:52 scons"
 
 import SCons.Action
 import SCons.Defaults
@@ -39,7 +39,7 @@
 import SCons.Tool.tex
 import SCons.Util
 
-_null = SCons.Tool.tex._Null
+_null = SCons.Scanner.LaTeX._null
 
 def DviPdfPsFunction(XXXDviAction, target = None, source= None, env=None):
     """A builder for DVI files that sets the TEXPICTS environment
@@ -50,18 +50,17 @@
     except AttributeError :
         abspath =  ''
 
-    saved_env = {}
-    saved_env['TEXPICTS'] = SCons.Tool.tex.modify_env_var(env, 'TEXPICTS', abspath)
+    saved_env = SCons.Scanner.LaTeX.modify_env_var(env, 'TEXPICTS', abspath)
 
     result = XXXDviAction(target, source, env)
 
-    if saved_env['TEXPICTS'] is _null:
+    if saved_env is _null:
         try:
             del env['ENV']['TEXPICTS']
         except KeyError:
             pass # was never set
     else:
-        env['ENV']['TEXPICTS'] = saved_env['TEXPICTS']
+        env['ENV']['TEXPICTS'] = saved_env
 
     return result