Log Message:
Update devel/st all the way from 1.5.1 to 1.8.

Changes from 1.7 to 1.8.
--------------------------
o  Added support for kqueue and epoll on platforms that support them.
   Added ability to choose the event notification system at program
   startup.

o  Long-overdue public definitions of ST_UTIME_NO_TIMEOUT (-1ULL) and
   ST_UTIME_NO_WAIT (0) [bug 1514436].

o  Documentation patch for st_utime() [bug 1514484].

o  Documentation patch for st_timecache_set() [bug 1514486].

o  Documentation patch for st_netfd_serialize_accept() [bug 1514494].

o  Added st_writev_resid() [rfe 1538344].

o  Added st_readv_resid() [rfe 1538768] and, for symmetry, st_readv().

Changes from 1.6 to 1.7.
------------------------
o  Support glibc 2.4, which breaks programs that manipulate jump buffers.
   Replaced Linux IA64 special cases with new md.S that covers all
   Linux.

Changes from 1.5.2 to 1.6.
--------------------------
none

Changes from 1.5.1 to 1.5.2.
----------------------------
o  Alfred Perlstein's context switch callback feature.

o  Claus Assmann's st_recvmsg/st_sendmsg wrappers.

o  Extra stack padding for platforms that need it.

o  Ron Arts's timeout clarifications in the reference manual.

o  Raymond Bero and Anton Berezin's AMD64 FreeBSD port.

o  Claus Assmann's AMD64 SunOS 5.10 port.

o  Claus Assmann's AMD64 OpenBSD port.

o  Michael Abd-El-Malek's Mac OS X port.

o  Michael Abd-El-Malek's stack printing patch.