Fix a const-related compiler warning produced by the "execve" wrapper.
Also, move network related wrappers to separate files, for SOCKS support.

Index: m3/m3core/src/runtime/FreeBSD2/RTHeapDepC.c
--- RTHeapDepC.c.orig	Sat Mar 23 14:52:21 1996
+++ RTHeapDepC.c	Tue Oct  8 14:31:15 1996
@@ -110,20 +110,6 @@
 /* Unless otherwise noted, all the following wrappers have the same
    structure. */
 
-int accept(s, addr, addrlen)   /* ok */
-int s;
-struct sockaddr *addr;
-int *addrlen;
-{ int result;
-
-  ENTER_CRITICAL;
-  MAKE_WRITABLE(addr);
-  MAKE_WRITABLE(addrlen);
-  result = syscall(SYS_accept, s, addr, addrlen);
-  EXIT_CRITICAL;
-  return result;
-}
-
 int access(path, mode)   /* ok */
 char *path;
 int mode;
@@ -228,19 +214,6 @@
 }
 */
 
-int bind(s, name, namelen)   /* ok */
-int s;
-const struct sockaddr *name;
-int namelen;
-{ int result;
-
-  ENTER_CRITICAL;
-  MAKE_READABLE(name);
-  result = syscall(SYS_bind, s, name, namelen);
-  EXIT_CRITICAL;
-  return result;
-}
-
 /* not implemented
 int cachectl(addr, nbytes, op)
 char *addr;
@@ -314,19 +287,6 @@
   return result;
 }
 
-int connect(s, name, namelen)   /* ok */
-int s;
-const struct sockaddr *name;
-int namelen;
-{ int result;
-
-  ENTER_CRITICAL;
-  MAKE_READABLE(name);
-  result = syscall(SYS_connect, s, name, namelen);
-  EXIT_CRITICAL;
-  return result;
-}
-
 /* not implemented (obsolete)
 int creat(name, mode)   
 const char *name;
@@ -356,8 +316,8 @@
     result = syscall(SYS_execve, name, argv, envp);
     if (result == -1 && errno == EFAULT) {
       MAKE_READABLE(name);
-      { char **a; for (a = argv; *a; a++) MAKE_READABLE(*a); }
-      { char **e; for (e = envp; *e; e++) MAKE_READABLE(*e); }
+      { char * const *a; for (a = argv; *a; a++) MAKE_READABLE(*a); }
+      { char * const *e; for (e = envp; *e; e++) MAKE_READABLE(*e); }
     } else {
       return result;
     }
@@ -513,20 +473,6 @@
 }
 */
 
-int getpeername(s, name, namelen)   /* ok */
-int s;
-struct sockaddr *name;
-int *namelen;
-{ int result;
-
-  ENTER_CRITICAL;
-  MAKE_WRITABLE(name);
-  MAKE_WRITABLE(namelen);
-  result = syscall(SYS_getpeername, s, name, namelen);
-  EXIT_CRITICAL;
-  return result;
-}
-
 int getrlimit(resource, rlp)   /* ok */
 int resource;
 struct rlimit *rlp;
@@ -551,20 +497,6 @@
   return result;
 }
 
-int getsockname(s, name, namelen)   /* ok */
-int s;
-struct sockaddr *name;
-int *namelen;
-{ int result;
-
-  ENTER_CRITICAL;
-  MAKE_WRITABLE(name);
-  MAKE_WRITABLE(namelen);
-  result = syscall(SYS_getsockname, s, name, namelen);
-  EXIT_CRITICAL;
-  return result;
-}
-
 int getsockopt(s, level, optname, optval, optlen)   /* ok */
 int s, level, optname;
 void *optval;
@@ -821,19 +753,6 @@
   return result;
 }
 
-int read(d, buf, nbytes)   /* ok */
-int d;
-char *buf;
-size_t nbytes;
-{ int result;
-
-  ENTER_CRITICAL;
-  MAKE_WRITABLE(buf);
-  result = syscall(SYS_read, d, buf, nbytes);
-  EXIT_CRITICAL;
-  return result;
-}
-
 int readlink(path, buf, bufsiz)   /* ok */
 char *path;
 char *buf;
@@ -865,46 +784,6 @@
   return result;
 }
 
-int recv(s, buf, len, flags)   /* ok */
-int s;
-void *buf;
-#if __FreeBSD__ >=2
-size_t len;
-#else
-int len;
-#endif
-int flags;
-{ int result;
-
-  ENTER_CRITICAL;
-  MAKE_WRITABLE(buf);
-  result = syscall(SYS_recvfrom, s, buf, len, flags, NULL, 0);
-  EXIT_CRITICAL;
-  return result;
-}
-
-int recvfrom(s, buf, len, flags, from, fromlen)   /* ok */
-int s;
-void *buf;
-#if __FreeBSD__ >=2
-size_t len;
-#else
-int len;
-#endif
-int flags;
-struct sockaddr *from;
-int *fromlen;
-{ int result;
-
-  ENTER_CRITICAL;
-  MAKE_WRITABLE(buf);
-  MAKE_WRITABLE(from);
-  MAKE_WRITABLE(fromlen);
-  result = syscall(SYS_recvfrom, s, buf, len, flags, from, fromlen);
-  EXIT_CRITICAL;
-  return result;
-}
-
 int recvmsg(s, msg, flags)   /* ok */
 int s;
 struct msghdr msg[];
@@ -950,24 +829,6 @@
   return result;
 }
 
-int select(nfds, readfds, writefds, exceptfds, timeout)   /* ok */
-int nfds;
-fd_set *readfds;
-fd_set *writefds;
-fd_set *exceptfds;
-struct timeval *timeout;
-{ int result;
-
-  ENTER_CRITICAL;
-  MAKE_WRITABLE(readfds);
-  MAKE_WRITABLE(writefds);
-  MAKE_WRITABLE(exceptfds);
-  MAKE_READABLE(timeout);
-  result = syscall(SYS_select, nfds, readfds, writefds, exceptfds, timeout);
-  EXIT_CRITICAL;
-  return result;
-}
-
 int semctl(semid, semnum, cmd, arg)   /* ok ? */
 int semid, cmd;
 int semnum;
@@ -1012,24 +873,6 @@
   return result;
 }
 
-int send(s, msg, len, flags)   /* ok */
-int s;
-const void *msg;
-#if __FreeBSD__ >=2
-size_t len;
-#else
-int len;
-#endif
-int flags;
-{ int result;
-
-  ENTER_CRITICAL;
-  MAKE_READABLE(msg);
-  result = syscall(SYS_sendto, s, msg, len, flags, NULL, 0);
-  EXIT_CRITICAL;
-  return result;
-}
-
 int sendmsg(s, msg, flags)   /* ok */
 int s;
 const struct msghdr msg[];
@@ -1051,27 +894,6 @@
   return result;
 }
 
-int sendto(s, msg, len, flags, to, tolen)   /* ok */
-int s;
-const void *msg;
-#if __FreeBSD__ >=2
-size_t len;
-#else
-int len;
-#endif
-int flags;
-const struct sockaddr *to;
-int tolen;
-{ int result;
-
-  ENTER_CRITICAL;
-  MAKE_READABLE(msg);
-  MAKE_READABLE(to);
-  result = syscall(SYS_sendto, s, msg, len, flags, to, tolen);
-  EXIT_CRITICAL;
-  return result;
-}
-
 int setdomainname(name, namelen)   /* ok */
 char *name;
 int namelen;
@@ -1414,19 +1236,6 @@
   ENTER_CRITICAL;
   MAKE_WRITABLE(status);
   result = syscall(SYS_wait4, pid, status, options, NULL);
-  EXIT_CRITICAL;
-  return result;
-}
-
-int write(fd, buf, nbytes)   /* ok */
-int fd;
-char *buf;
-int nbytes;
-{ int result;
-
-  ENTER_CRITICAL;
-  MAKE_READABLE(buf);
-  result = syscall(SYS_write, fd, buf, nbytes);
   EXIT_CRITICAL;
   return result;
 }