sure this doesn't get weird on 64bit archs.

archs, also no longer typecast pointers to ints as that is a nono on 64bit
systems.

a man page to text is found, we disable the built-in manual stuff to still
be able to build.

outside the source dir, not needing any symlinks

with anyway and thus caused picky compiler to warn.

we seem to have nailed that one now!

This is made to prevent compiler warnings.

about it never being used

getaddrinfo() implementation.

These minor changes remove portability issues with the this example and allow
it to run on Win32. Specifically:

* The use of pthread_create() has been replaced by g_thread_create(). This
removes the dependency on the pthreads library. Since this is an example using
GTK+, g_thread_create() is available as it is a part of glibc.

* The CURLOPT_FILE option is now referred to by its "newer name"
CURLOPT_WRITEDATA.

* The use of CURLOPT_WRITEFUNCTION has been added.  As described in the docs,
this avoids the crashes when using a DLL under Win32.

* The output file has been renamed from "/tmp/test.curl" to "test.curl". It's
unlikely that there is a /tmp when in Win32 and other examples in libcurl
write their output files to the working directory.