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>

1 files changed, 40 insertions, 0 deletions

diff --git a/util/sbase/comm.1 b/util/sbase/comm.1
new file mode 100644
index 00000000..5df70c2c
--- /dev/null
+++ b/util/sbase/comm.1
@@ -0,0 +1,40 @@
+.Dd October 8, 2015
+.Dt COMM 1
+.Os sbase
+.Sh NAME
+.Nm comm
+.Nd select or reject lines common to two files
+.Sh SYNOPSIS
+.Nm
+.Op Fl 123
+.Ar file1
+.Ar file2
+.Sh DESCRIPTION
+.Nm
+reads
+.Ar file1
+and
+.Ar file2 ,
+which should both be sorted lexically, and writes three text columns
+to stdout:
+.Bl -tag -width Ds
+.It 1
+Lines only in
+.Ar file1 .
+.It 2
+Lines only in
+.Ar file2 .
+.It 3
+Common lines.
+.El
+.Sh OPTIONS
+.Bl -tag -width Ds
+.It Fl 1 | Fl 2 | Fl 3
+Suppress column 1 | 2 | 3
+.El
+.Sh SEE ALSO
+.Xr cmp 1 ,
+.Xr sort 1 ,
+.Xr uniq 1
+.Sh STANDARDS
+POSIX.1-2013.