libtask

copy from http://swtch.com/libtask/, add some comment

Name		Name	Last commit message	Last commit date
Latest commit History 6 Commits
test		test
386-ucontext.h		386-ucontext.h
COPYRIGHT		COPYRIGHT
Makefile		Makefile
README		README
README.md		README.md
amd64-ucontext.h		amd64-ucontext.h
asm.S		asm.S
channel.c		channel.c
context.c		context.c
fd.c		fd.c
httpload.c		httpload.c
makesun		makesun
mips-ucontext.h		mips-ucontext.h
net.c		net.c
power-ucontext.h		power-ucontext.h
primes.c		primes.c
print.c		print.c
qlock.c		qlock.c
rendez.c		rendez.c
tags		tags
task.c		task.c
task.h		task.h
taskimpl.h		taskimpl.h
tcplongclient.c		tcplongclient.c
tcplongconnection.c		tcplongconnection.c
tcpproxy.c		tcpproxy.c
testdelay.c		testdelay.c
testdelay1.c		testdelay1.c

Provide feedback