Upgrade from 1.0 to the latest bugfix release 1.1.

<ChangeLog>

*) Bugfix: Python applications that use the write() callable did not

work.

*) Bugfix: virtual environments created with Python 3.3 or above might

not have worked.

*) Bugfix: the request.Read() function in Go applications did not

produce EOF when the whole body was read.

*) Bugfix: a segmentation fault might have occurred while access log

reopening.

*) Bugfix: in parsing of IPv6 control socket addresses.

*) Bugfix: loading of application modules was broken on OpenBSD.

*) Bugfix: a segmentation fault might have occurred when there were two

modules with the same type and version; the bug had appeared in 1.0.

*) Bugfix: alerts "freed pointer points to non-freeble page" might have

appeared in log on 32-bit platforms.

</ChangeLog>