Change "\," to just "," in function signatures.  This is easier to maintain,
works better with LaTeX2HTML, and allows some simplification of the python.sty
macros.
diff --git a/Doc/libdis.tex b/Doc/libdis.tex
index b4c74fb..e11a1f6 100644
--- a/Doc/libdis.tex
+++ b/Doc/libdis.tex
@@ -49,7 +49,7 @@
 is indicated.
 \end{funcdesc}
 
-\begin{funcdesc}{disassemble}{code\optional{\, lasti}}
+\begin{funcdesc}{disassemble}{code\optional{, lasti}}
 Disassembles a code object, indicating the last instruction if \var{lasti}
 was provided.  The output is divided in the following columns:
 \begin{itemize}
@@ -65,7 +65,7 @@
 operators.
 \end{funcdesc}
 
-\begin{funcdesc}{disco}{code\optional{\, lasti}}
+\begin{funcdesc}{disco}{code\optional{, lasti}}
 A synonym for disassemble.  It is more convenient to type, and kept
 for compatibility with earlier Python releases.
 \end{funcdesc}