7.1.21

7x

• client: optionally detect GPUs via a child process, for dual_GPU laptops. Some dual-GPU laptops (e.g., Macbook Pro) don't power down the more powerful GPU until all applications which used them exit. To save battery life, the client launches a second instance of the client as a child process to detect and get info about the GPUs. The child process writes the info to a temp file which our main client then reads. This option is enabled at compile time by defining USE_CHILD_PROCESS_TO_DETECT_GPUS as non-zero in gpu_detect.cpp
• client: fix compile break on Windows
• client: bug fix for detecting GPUs via a child process.