rump_allserver(1): fix markup, clarify

Reorder text for the -d option to hopefully make it easier to follow.
Clarify that the "disklabel" keyword takes partion letter (from RTFS).

Sort options in SYNOPSIS.

Order is: 0123.9AaBbCc...Zz;
options without arguments in a block first, then the ones with arguments.

Add missing options to SYNOPSIS and sort

terminology audit

Attempt to load all components even if they are not given in
dependency order.

branches: 1.19.4; 1.19.10;
adjust wording in previous

Add note about block device properties.

From discussion with <riz>.

.Xr rump_sp 7

add command line options for kernel memory allocation limit and bootverbose

Use "host" instead of the slightly more cryptic "e" to indicate
that the size of the mapping should be taken from the host file
size.

Use "size=e" as a way say "if the underlying file is preexisting
regular file, use whatever size it has".

Make it possible to specify the type of file (blk/chr/reg) that a
mapped file (-d) is exposed as within the rump kernel.

Allow to specify -d hostpath offset,size with disklabel.

Create backing image with mode 0644 instead of 0755 & document this.

whoopsie, bump date

* make it possible to specify an offset in -d
* truncate -d hostpath only if it's a regular file and smaller
than offset+size

branches: 1.8.2;
BUGS is gone (and on its way out it inquired about the doctor's status)

Add -c to control the number of CPUs configured in the kernel.

language fix. sniped by wizd

document the current syscall bug with rump_server and -l

Add an example for a server listening on a tcp port.

also, bump date to avoid problems with wizd

Add -d which can be used to register host-backed block devices in
the rump kernel.

It would be cool if this, and the other options, could be specified
in a config file (plist or other).

Fix Xr and use Sx.

manpage