config/git: import suckless sbase

i currently use the output of sha512sum in several
places of xbmk, which is a bit unreliable in case
output changes.

other cases where i use util outputs in variables
are probably reliable, because i'm using mostly
posix utilities in those.

to mitigate this, i now import suckless sbase, which
has a reasonable sha512sum implementation.

*every* binary it builds is being placed in build.list,
because i'll probably start using more of them.

for example, i may start modifying the "date"
implementation, adding the GNU-specific options that
i need as mentioned on init.sh

i'm importing it in util/ because the sha512sum
util is needed for verifying project sources, so
if sbase itself is a "project source", that means
we can into a chicken and egg bootstrapping problem.

this is sbase at revision:
055cc1ae1b3a13c3d8f25af0a4a3316590efcd48

Signed-off-by: Leah Rowe <leah@libreboot.org>

util/sbase/logger.1

@@ -0,0 +1,52 @@
+.Dd October 8, 2015
+.Dt LOGGER 1
+.Os sbase
+.Sh NAME
+.Nm logger
+.Nd make entries in the system log
+.Sh SYNOPSIS
+.Nm
+.Op Fl is
+.Op Fl p Ar priority
+.Op Fl t Ar tag
+.Op Ar message ...
+.Sh DESCRIPTION
+.Nm
+provides a shell command interface to the
+.Xr syslog 3
+system log module and writes each
+.Ar message
+to the log.
+If no
+.Ar message
+is given,
+.Nm
+logs stdin.
+.Sh OPTIONS
+.Bl -tag -width xxxxxxxxxxxx
+.It Fl i
+Add the logger process ID to each line in the log.
+.It Fl p Ar priority
+Set the message
+.Ar priority
+given symbolically as a
+.Dq facility.level
+pair.
+The default is
+.Dq user.notice .
+.It Fl s
+Also log to stderr.
+.It Fl t Ar tag
+Add
+.Ar tag
+to each line in the log.
+.El
+.Sh SEE ALSO
+.Xr syslogd 1 ,
+.Xr syslog 3
+.Sh STANDARDS
+POSIX.1-2013.
+.Pp
+The
+.Op Fl ipst
+flags are an extensions to that specification.