* HTTP_C::Implement Context::MakeRequest
* httplib: Add add_client_cert_ASN1 and set_verify
* HTTP_C: Fix request methode strings case in MakeRequest
* HTTP_C: clang-format and cleanups
* HTTP_C: Add comment about async in BeginRequest and BeginRequestAsync
* Update httplib to contain all the changes we need; adapt http_c and web_services to the changes in httplib; addressed minor review comments
* Add android-ifaddrs
