build: Simplify the version file generation Remove the gen-dist.sh script and do not add the git sha if we are doing and out-of-tree build. Instead, rely only on the version provided by the meson project. Make builds reproducible by using SOURCE_DATE_EPOCH for build date Don't embed the current date which make the builds unreproducible. Signed-off-by: Naushir Patuck <[email protected]>