#65 Add command to list filters

[Robert Seeger]

Currently, there is no way to get a list of currently
defined filters. I'd like to see a single command,
ns_request, that is used to get information about (and
possibly make changes to) request handlers (the list of
registered filters, the list of registered procs, any
other information about request handlers). I believe
this would be a useful grouping of related commands.

However, at the least, I'd like to see a way to list
the current filters added to the core. I am attaching
code that does just that. It is implemented as a
subcommand of ns_request, though its done in such a way
that one could use it as a seperate command easily.

Rob Seeger

[Robert Seeger]

Gzipped tarball with the file that implements ns_request, plus the 'diff -uN' of nsd/Makefile and nsd/tclcmds.c

[Zoran Vasiljevic]

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Please see the RFE 1012103.
Maybe we could combine those two?