从源码编译UE4,加快Setup.bat下载文件的环节

Usage:
   GitDependencies [options]

Options:
   --all                         Sync all folders
   --include=<X>                 Include binaries in folders called <X>
   --exclude=<X>                 Exclude binaries in folders called <X>
   --prompt                      Prompt before overwriting modified files
   --force                       Always overwrite modified files
   --root=<PATH>                 Set the repository directory to be sync
   --threads=<N>                 Use N threads when downloading new files
   --dry-run                     Print a list of outdated files and exit
   --max-retries                 Override maximum number of retries per file
   --proxy=<user:password@url>   Sets the HTTP proxy address and credentials
   --cache=<PATH>                Specifies a custom path for the download cache
   --cache-size-multiplier=<N>   Cache size as multiplier of current download
   --cache-days=<N>              Number of days to keep entries in the cache
   --no-cache                    Disable caching of downloaded files

Detected settings:
   Excluded folders: Mac, Android, Linux
   Proxy server: none
   Download cache: disabled

Default arguments can be set through the UE4_GITDEPS_ARGS environment variable.
Installing prerequisites...