Fix a bunch of typos in documentation, docstrings and comments.

(From SF patch #810751)

Tools/bgen/bgen/bgenOutput.py

@@ -58,7 +58,7 @@ def Output(format = "", *args):
     VaOutput(format, args)
 
 def VaOutput(format, args):
-    """Call this with a format string and and argument tuple for the format.
+    """Call this with a format string and argument tuple for the format.
 
     A newline is always added.  Each line in the output is indented
     to the proper indentation level -- even if the result of the

Tools/freeze/README

@@ -135,7 +135,7 @@ under Windows, or libtcl8.2.so and libtcl8.2.so under Unix) are required
 at program load time, and are searched by the operating system loader
 before Python can be started. Under Windows, the environment
 variable PATH is consulted, and under Unix, it may be the
-the environment variable LD_LIBRARY_PATH and/or the system
+environment variable LD_LIBRARY_PATH and/or the system
 shared library cache (ld.so). An additional preferred directory for
 finding the dynamic libraries is built into the .dll or .so files at
 compile time - see the LIB_RUNTIME_DIR variable in the Tcl makefile. 

Tools/scripts/fixdiv.py

@@ -56,7 +56,7 @@ Here are the possible messages on stdout (N stands for a line number):
 - 'No conclusive evidence on line N', line marked by '*':
 
   A / operator was found for which no warnings were seen.  This could
-  be code that was never executed, or code that was only executed with
+  be code that was never executed, or code that was only executed
   with user-defined objects as arguments.  You will have to
   investigate further.  Note that // can be overloaded separately from
   /, using __floordiv__.  True division can also be separately