trac 17 update set_log_level api notice

http://libwebsockets.org/trac/ticket/17

Reported-by: dbrnz
Signed-off-by: Andy Green <andy.green@linaro.org>
Added "make install" support to the CMake project.

- Does everything as the autoconf script does (I think).
- Generates SSL certs for the test-server
- Installs all test apps.
- Defaults to /usr/local/
- "DESTDIR=/bla make install" works
- Append "libwebsockets" to start of the test-app names like the autoconf stuff does.
- Only tested on OSX so far...
Create the "doc" dir before generating docs.

The documentation wouldn't be generated if the path didn't exist.
cmake docs add note about prefix

Signed-off-by: Andy Green <andy.green@linaro.org>
update missed extpoll calls to use correct args for ssl

http://libwebsockets.org/trac/ticket/15#comment:16

Reported-by: Joakim Soderberg <joakim.soderberg@gmail.com>
Signed-off-by: Andy Green <andy.green@linaro.org>
cmake fix for older cmake

AG this wasn't needed on cmake 2.8.10.2 but did not make any
problem either

Signed-off-by: Edwin van den Oetelaar <oetelaar.automatisering@gmail.com>