[9base] add read -c

          With the -c flag, read copies exactly nbytes of characters
          instead of lines. It is mutually exclusive with -n and -m
          flag.

-sl

diff -r c6943e63621b read/read.1
--- a/read/read.1	Thu Apr 19 18:17:26 2012 +0100
+++ b/read/read.1	Mon Jul 02 13:41:08 2012 -0500
 <at>  <at>  -9,6 +9,9  <at>  <at> 
 .br
 .B read
 [
+.B -c
+] [
+[
 .B -m
 ] [
 .B -n
 <at>  <at>  -62,6 +65,18  <at>  <at> 
 .I nline
 lines.
 .PP
+With the
+.B -c
+flag,
+.I read
+copies exactly
+.I nbytes
+of characters instead of lines. It is mutually exclusive with