* build: allow Linux distros to build against system shared libraries
Add GN flags to build the embedded nodejs copy against system libraries
instead of vendored copies in `third_party/electron_node/deps`:
* cares
* llhttp
* nghttp2
* hdr_histogram
See also chromium's build/linux/unbundle/README for more
Electron-relevant information about vendored dependencies.
* Update patches/node/build_add_gn_build_files.patch
Co-authored-by: Darshan Sen <raisinten@gmail.com>
Co-authored-by: Darshan Sen <raisinten@gmail.com>
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