Accepting request 667306 from home:1Antoine1:branches:devel:libraries:c_c++

- Fix licensing issues:
  * Use upstream tarball as is, i.e. don't include third-party
    stuff from vcpkg submodule.
  * As a consequence, websocketpp is not embedded in tarball so
    add build requirement on system's websocketpp.

OBS-URL: https://build.opensuse.org/request/show/667306
OBS-URL: https://build.opensuse.org/package/show/devel:libraries:c_c++/cpprest?expand=0&rev=38

cpprest.spec

@@ -31,11 +31,11 @@ Summary:        C++ REST library
 License:        MIT AND BSD-3-Clause AND Zlib
 Group:          Development/Libraries/C and C++
 URL:            https://github.com/Microsoft/cpprestsdk
-#Source:         https://github.com/Microsoft/cpprestsdk/archive/v%{version}/cpprestsdk-%{version}.tar.gz
-Source:         cpprestsdk-%{version}.tar.gz
+Source:         https://github.com/Microsoft/cpprestsdk/archive/v%{version}/cpprestsdk-%{version}.tar.gz
 BuildRequires:  cmake >= 3.0
 BuildRequires:  gcc-c++
 BuildRequires:  openssl-devel >= 1.0
+BuildRequires:  pkgconfig(websocketpp) >= 0.8
 %if 0%{?suse_version} > 1325
 BuildRequires:  libboost_atomic-devel
 BuildRequires:  libboost_filesystem-devel