bootstrap: Missing configure flag --no-system-nghttp2
When configuring, there is no flag to use the CMake-provided nghttp2 because the flag --no-system-nghttp2 is missing.
a) Can we add an according flag that would switch of CMAKE_USE_SYSTEM_NGHTTP2
?
or
b) Can we switch of CMAKE_USE_SYSTEM_NGHTTP2
when --no-system-curl is set?
Either way, I can provide an according merge request. I would like to have such a flag for 3.18.1, as I have troubles updating openSuse's CMake package (the cmake-mini flavor).