update man page to reflect -L option

Reference: /n/atom/patch/applied2013/man8l
Date: Tue Jun 18 20:25:28 CES 2013
Signed-off-by: quanstro@quanstro.net

--- /sys/man/1/8l	Tue Jun 18 20:25:13 2013
+++ /sys/man/1/8l	Tue Jun 18 20:25:13 2013
@@ -177,15 +177,15 @@
 .B obj.c
 in the source directory for a complete list.
 .TP
-.B -P
+.B -k
 (ELF only)
-Executable is standalone boot image or kernel.
+Executable is a standalone boot image or kernel.
 .TP
 .BI -T t
 The text segment starts at (virtual) address
 .IR t .
 .TP
-.BI -F t
+.BI -P t
 (ELF only)
 The text segment starts at physical address
 .I t
@@ -201,6 +201,17 @@
 (if
 .I r
 is nonzero).
+.TP
+.BI -L dir
+For a library reference
+.BI -l ext,
+search
+.I dir
+before looking in the standard library directory.
+If more than one
+.B -L
+option is given,
+directories will be searched in order of appearance.
 .PP
 The numbers in the above options can begin with
 .L 0x