Merge branch 'rb/build-options-w-lib-versions'

"git version --build-options" reports the version information of
OpenSSL and other libraries (if used) in the build.

* rb/build-options-w-lib-versions:
  version: teach --build-options to reports zlib version information
  version: teach --build-options to reports libcurl version information
  version: --build-options reports OpenSSL version information

diff --cc help.c
Simple merge