socket functions: Avoid link errors on Solaris.

socket functions: Avoid link errors on Solaris.

* modules/accept (Depends-on): Add socketlib.
(Link): New section.
* modules/bind (Depends-on): Add socketlib.
(Link): New section.
* modules/connect (Depends-on): Add socketlib.
(Link): New section.
* modules/getpeername (Depends-on): Add socketlib.
(Link): New section.
* modules/getsockname (Depends-on): Add socketlib.
(Link): New section.
* modules/getsockopt (Depends-on): Add socketlib.
(Link): New section.
* modules/listen (Depends-on): Add socketlib.
(Link): New section.
* modules/recv (Depends-on): Add socketlib.
(Link): New section.
* modules/recvfrom (Depends-on): Add socketlib.
(Link): New section.
* modules/send (Depends-on): Add socketlib.
(Link): New section.
* modules/sendto (Depends-on): Add socketlib.
(Link): New section.
* modules/setsockopt (Depends-on): Add socketlib.
(Link): New section.
* modules/shutdown (Depends-on): Add socketlib.
(Link): New section.
* modules/socket (Depends-on): Add socketlib.
(Link): New section.