Add a proper upper limit (4096 seems enough for now) and safely NUL-terminate the rbuf. The idea is to later drop the clt->buf static buffer and allocate it on demand only when we need to do (http) chunking.

Generate the HTML for the filter input in js (it's useless to have it there otherwise) and actually filter the entries. It's a basic case insensitive match, but it's a start. To do so, add dispatch event type X: to mark the end of the playlist so js can replay the filtering.

- more consistent naming for libs (LDADD_LIB_*) - allow to change CC and CFLAGS as arguments - allow to specify the LDADD_LIB_* as arguments

On the BSDs the SHA1Init() and friends are part of libc, while on linux (and maybe other systems as well) we need an implementation of these function: libmd for example.

The configure ran it but wasn't present in the tests.c file. Will need to switch away from this all-in-one someday...