message: This works better
  Triggers openssl build fine, but:
  1) got a few compile errors in openssl build. Fixed them myself by editing openssl code, but i don't think it's a long-term solution
  2) Examples are getting linker errors (undefined references to openssl funcs) and i don't know why yet
diff: @@ -7,10 +7,11 @@ set(VS140_SCRIPTS_DIR $ENV{VS140COMNTOOLS})
  add_custom_command(
  OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/build/lib/libeay32.lib" "${CMAKE_CURRENT_BINARY_DIR}/build/lib/ssleay32.lib"
  COMMAND "${VS140_SCRIPTS_DIR}vsvars32.bat"
  - COMMAND "${PERL_EXECUTABLE}" "${CMAKE_CURRENT_SOURCE_DIR}/openssl/Configure" VC-WIN32 no-asm --prefix="${CMAKE_CURRENT_BINARY_DIR}/build"
  - COMMAND "${NMAKE_64_EXECUTABLE}" -f "${CMAKE_CURRENT_SOURCE_DIR}/openssl/ms/ntdll.mak"
  - COMMAND "${NMAKE_64_EXECUTABLE}" -f "${CMAKE_CURRENT_SOURCE_DIR}/openssl/ms/ntdll.mak" install
  - #WORKING_DIRECTORY ./openssl
  + COMMAND "${PERL_EXECUTABLE}" "${CMAKE_CURRENT_SOURCE_DIR}/openssl/Configure" VC-WIN64A no-asm --prefix=${CMAKE_CURRENT_BINARY_DIR}/build
  + COMMAND "${CMAKE_CURRENT_SOURCE_DIR}/openssl/ms/do_win64a.bat"
  + COMMAND "${NMAKE_64_EXECUTABLE}" -f "${CMAKE_CURRENT_SOURCE_DIR}/openssl/ms/nt.mak"
  + COMMAND "${NMAKE_64_EXECUTABLE}" -f "${CMAKE_CURRENT_SOURCE_DIR}/openssl/ms/nt.mak" install
  + WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/openssl"
  COMMENT "Building OpenSSL..."
  VERBATIM
  )
  