Make search non-blocking

Thanks to a new feature in libweb, it is now possible to generate HTTP
responses asynchronously i.e., without blocking other clients if the
response takes a long time to generate.

This now allow users to search for files or directories without blocking
other users, regardless how much time the search operation takes.

This required cftw to deviate from the POSIX-like, blocking interface it
had so far, and has been replaced now with a non-blocking interface, so
that directories are inspected one entry at a time.

1 files changed, 0 insertions, 0 deletions

diff --git a/libweb b/libweb
-Subproject f7864cb7d49a8ca5bddf8d1f68b71ecd5ed85ad
+Subproject 5a6f30440b66fe6713acb9d979dc3e6624e4c36