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diff --git a/third_party/scons/scons-local/SCons/Scanner/LaTeX.py b/third_party/scons/scons-local/SCons/Scanner/LaTeX.py
new file mode 100644
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+++ b/third_party/scons/scons-local/SCons/Scanner/LaTeX.py
@@ -0,0 +1,126 @@
+"""SCons.Scanner.LaTeX
+
+This module implements the dependency scanner for LaTeX code.
+
+"""
+
+#
+# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 The SCons Foundation
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__revision__ = "src/engine/SCons/Scanner/LaTeX.py 3424 2008/09/15 11:22:20 scons"
+
+import os.path
+import string
+
+import SCons.Scanner
+
+def LaTeXScanner():
+    """Return a prototype Scanner instance for scanning LaTeX source files"""
+    ds = LaTeX(name = "LaTeXScanner",
+               suffixes =  '$LATEXSUFFIXES',
+               path_variable = 'TEXINPUTS',
+               regex = '\\\\(include|includegraphics(?:\[[^\]]+\])?|input|bibliography|usepackage){([^}]*)}',
+               recursive = 0)
+    return ds
+
+class LaTeX(SCons.Scanner.Classic):
+    """Class for scanning LaTeX files for included files.
+
+    Unlike most scanners, which use regular expressions that just
+    return the included file name, this returns a tuple consisting
+    of the keyword for the inclusion ("include", "includegraphics",
+    "input", or "bibliography"), and then the file name itself.  
+    Based on a quick look at LaTeX documentation, it seems that we 
+    need a should append .tex suffix for the "include" keywords, 
+    append .tex if there is no extension for the "input" keyword, 
+    but leave the file name untouched for "includegraphics." For
+    the "bibliography" keyword we need to add .bib if there is
+    no extension. (This need to be revisited since if there
+    is no extension for an "includegraphics" keyword latex will 
+    append .ps or .eps to find the file; while pdftex will use 
+    other extensions.)
+    """
+    def latex_name(self, include):
+        filename = include[1]
+        if include[0] == 'input':
+            base, ext = os.path.splitext( filename )
+            if ext == "":
+                filename = filename + '.tex'
+        if (include[0] == 'include'):
+            filename = filename + '.tex'
+        if include[0] == 'bibliography':
+            base, ext = os.path.splitext( filename )
+            if ext == "":
+                filename = filename + '.bib'
+        if include[0] == 'usepackage':
+            base, ext = os.path.splitext( filename )
+            if ext == "":
+                filename = filename + '.sty'
+        return filename
+    def sort_key(self, include):
+        return SCons.Node.FS._my_normcase(self.latex_name(include))
+    def find_include(self, include, source_dir, path):
+        i = SCons.Node.FS.find_file(self.latex_name(include),
+                                    (source_dir,) + path)
+        return i, include
+
+    def scan(self, node, path=()):
+        #
+        # Modify the default scan function to allow for the regular
+        # expression to return a comma separated list of file names
+        # as can be the case with the bibliography keyword.
+        #
+        # cache the includes list in node so we only scan it once:
+        if node.includes != None:
+            includes = node.includes
+        else:
+            includes = self.cre.findall(node.get_contents())
+            node.includes = includes
+
+        # This is a hand-coded DSU (decorate-sort-undecorate, or
+        # Schwartzian transform) pattern.  The sort key is the raw name
+        # of the file as specifed on the #include line (including the
+        # " or <, since that may affect what file is found), which lets
+        # us keep the sort order constant regardless of whether the file
+        # is actually found in a Repository or locally.
+        nodes = []
+        source_dir = node.get_dir()
+        for include in includes:
+            #
+            # Handle multiple filenames in include[1]
+            #
+            inc_list = string.split(include[1],',')
+            for j in range(len(inc_list)):
+                include_local = [include[0],inc_list[j]]
+                n, i = self.find_include(include_local, source_dir, path)
+
+            if n is None:
+                SCons.Warnings.warn(SCons.Warnings.DependencyWarning,
+                                    "No dependency generated for file: %s (included from: %s) -- file not found" % (i, node))
+            else:
+                sortkey = self.sort_key(include)
+                nodes.append((sortkey, n))
+
+        nodes.sort()
+        nodes = map(lambda pair: pair[1], nodes)
+        return nodes