allow ``root'' rule to be specified per-location block

added ``alias'' option to define hostname aliases for a server

don't save the directory fd in c->pfd scandir_fd already calls closedir, which in turns closes the fd

sort the auto index alphabetically

rename reschedule_* to yield_*

define TLS_VERSION, TLS_CIPHER and TLS_CIPHER_STRENGTH for CGI scripts

list instead of fixed-size array for vhosts and locations saves some bytes of memory and removes the limit on the maximum number of vhosts and location blocks.

move all sandbox-related code to sandbox.c while there, add capsicum for the logger process

refactoring: imsg everywhere use imsg to handle ALL kinds of IPC in gmid. This simplifies and shorten the code, and makes everything more uniform too.

move vhost_should_log call to server.c log.o is linked to some regress/ stuff. Calling from there a vhost_* function means that we should link the regress/stuff to server.o too (and that would pull in other stuff...). Moving the call is easier, and also probably better.

add `log on/off' to enable/disable logs per-location

tests and compat for imsg

mark reschedule_write inline & static

other s/fnmatch/matches

fix various compilation errors Include gmid.h as first header in every file, as it then includes config.h (that defines _GNU_SOURCE for instance). Fix also a warning about unsigned vs signed const char pointers in openssl.