PATCH: Don't use GIFs for htDig

[Gerald Pfeifer <pfeifer at dbai dot tuwien dot ac dot at>]

This replaces all remaining references to GIF files used by our htDig
search engine. Installed and tested.

I also added htdig.jpeg and will shortly remove all GIF files from the
repository.

Jason took already care of the htDig configuration. Thanks also to H-P
for pointing this out and providing snippets for the configuration files.

Gerald

Index: footer.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/htdig/footer.html,v
retrieving revision 1.1
diff -r1.1 footer.html
5c5
< <img src="/htdig/htdig.gif" border=0>ht://Dig $(VERSION)</a>
---
> <img src="/htdig/htdig.jpeg" border=0>ht://Dig $(VERSION)</a>
Index: header.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/htdig/header.html,v
retrieving revision 1.1
diff -r1.1 header.html
3c3
< <h2><img src="/htdig/htdig.gif">
---
> <h2><img src="/htdig/htdig.jpeg">
23c23
< More <img src="/htdig/star.gif" alt="*">'s indicate a better match.
---
> More <img src="/htdig/star.png" alt="*">'s indicate a better match.
Index: nomatch.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/htdig/nomatch.html,v
retrieving revision 1.1
diff -r1.1 nomatch.html
3c3
< <h1><img src="/htdig/htdig.gif">
---
> <h1><img src="/htdig/htdig.jpeg">
36c36
< <img src="/htdig/htdig.gif" border=0>ht://Dig $(VERSION)</a>
---
> <img src="/htdig/htdig.jpeg" border=0>ht://Dig $(VERSION)</a>
Index: syntax.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/htdig/syntax.html,v
retrieving revision 1.1
diff -r1.1 syntax.html
3c3
< <h1><img src="/htdig/htdig.gif">
---
> <h1><img src="/htdig/htdig.jpeg">
33c33
< <img src="/htdig/htdig.gif" border=0>ht://Dig $(VERSION)</a>
---
> <img src="/htdig/htdig.jpeg" border=0>ht://Dig $(VERSION)</a>