As the this new Curl version supports well the Windows certificate storage,
removing the dependency on the OpenSSL. Also changing the build scripts to work
accordingly. As the cmake build of Curl is said to broken abandoning it in
favor of the nmake files. Thanks to Gregg Smith and Steffen.
Now checking for common errors while building. Refactoring
on the build scripts, now there is this build_dependencies.bat
script on the iis sub-folder. By calling this script all the
dependencies should be build under the winbuild/.
This commit also removes build scripts that were not needed
anymore.
