instead of just "htmlhead" and "htmltail" there are now:
"sourcehead" and "sourcetail"
"sourcedirhead" and "sourcedirtail"
"findhead" and "findtail"
"identhead" and "identtail"
"searchhead" and "searchtail"
so that each CGI can have its own custom headers and footers.
If (for example) identhead isn't configured in lxr.conf, then
htmlhead will be used instead.
"sourcedir*" is used in preference to "source*" when the output
of the "source" script is a CGI. If sourcedir* aren't configured,
then it falls back to "source*" (and from there to "html*")
to increase the field size from 6 to 8! That's robust... It seems that
</FORM> inserts a paragraph break even when it comes just before </TD>,
so the "use this field" text must be inside the </FORM> in order to be
snugly against the text field. But, if "Text Search" isn't in the same
<TR> as the text field, they won't line up properly vertically. So
I can't figure out how to combine all of the <FORM>s into one table to
make the columns all line up without introducing lots of vertical space.
