[NTG-pdftex] pdftex.ch: weave --> tex

Hi, the simple changes below in pdftex.ch make pdftex.w weave/texable without error stops. In the original pdftex.ch there are some code sections commented out; as these are treated as text, tex complains about unescaped underscores. Here's the patch, which makes these comments literal code (I like to have pdftex.dvi easily generated): 2274c2274 < { ---

{|

2279c2279 < } ---

|}

5235c5235 < { ---

{|

5242c5242 < } ---

|}

5485c5485 < { ---

{| 5494c5494 < }

|} 8319c8319 < {

{|

8327c8327 < } ---

|}

Greetings Hartmut