Add man pages for all librc functions.

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+.\" Copyright 2007 Roy Marples
+.\" All rights reserved
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.Dd Dec 24, 2007
+.Dt RC_STRLIST 3 SMM
+.Os OpenRC
+.Sh NAME
+.Nm rc_strlist_add , rc_strlist_addu , rc_strlist_addsort ,
+.Nm rc_strlist_addsortc , rc_strlist_addsortu , rc_strlist_delete ,
+.Nm rc_strlist_join , rc_strlist_reverse , rc_strlist_free
+.Nd RC string list functions
+.Sh LIBRARY
+Run Command library (librc, -lrc)
+.Sh SYNOPSIS
+.In rc.h
+.Ft "char *" Fn rc_strlist_add "char ***list" "const char *item"
+.Ft "char *" Fn rc_strlist_addu "char ***list" "const char *item"
+.Ft "char *" Fn rc_strlist_addsort "char ***list" "const char *item"
+.Ft "char *" Fn rc_strlist_addsortc "char ***list" "const char *item"
+.Ft "char *" Fn rc_strlist_addsortu "char ***list" "const char *item"
+.Ft bool Fn rc_strlist_delete "char ***list" "const char *item"
+.Ft "char *" Fn rc_strlist_join "char ***list1" "const char **list2"
+.Ft void Fn rc_strlist_reverse "char **list"
+.Ft void Fn rc_strlist_free "char **list"
+.Sh DESCRIPTION
+These functions provide an easy means of manipulating string lists without
+the need for custom structures or non standard macros.
+.Pp
+.Fn rc_strlist_add
+adds a malloced copy of
+.Fa item
+to
+.Fa list ,
+realloced to accomodate the new item. It returns a pointer to the new item on
+success, or NULL on failure and sets
+.Va errno
+accordingly.
+.Fn rc_strlist_addu
+and
+.Fn rc_strlist_addsortu
+only work if
+.Fa list
+does not already contain
+.Fa item .
+.Fn rc_strlist_addsort
+adds the item to the list in a lexically sorted position, using
+.Nm strcoll ,
+whereas
+.Fn rc_strlist_addsortc
+uses
+.Nm strcmp .
+.Pp
+.Fn rc_strlist_delete
+removes and frees
+.Fa item
+from
+.Fa list ,
+retuning true on success, otherwise false.
+.Pp
+.Fn rc_strlist_join
+appends
+.Fa list2
+to the end of
+.Fa list1
+and returns a pointer to the last item on the new list.
+.Pp
+.Fn rc_strlist_reverse
+reverses the items on
+.Fa list .
+.Pp
+.Fn rc_strlist_free
+frees each item on
+.Fa list
+and the
+.Fa list
+itself.
+.Sh SEE ALSO
+.Xr malloc 3 ,
+.Xr free 3 ,
+.Xr strcmp 3 ,
+.Xr strcoll 3
+.Sh AUTHORS
+.An "Roy Marples" Aq roy@marples.name