Merge request: toolchains - mono/atari-adjustments

Hello,

I have fixed a bunch of warnings caused by windom and Hermes headers,
by patching the headers causing the warnings.

The branch also adds several curl options to the atari build.

Please merge the branch mono/atari-adjustments of
http://git.netsurf-browser.org/toolchains.git,

Thanks & greets,
Ole