Port to python3

Parth Pratim Chatterjeerequested to merge
ParthPratim1/elf-loader:master into master

Signed-off-by: Parth Pratim Chatterjee parth27official@gmail.com

Improvised patch !1 (closed) by @teto1 to update extract-system-config script to python3

Changes made

  • changed shebang to default to python3 environment
  • moved from popen -> subprocess
  • converting to list for calculating number of keys
  • updated key checking in python hash maps
  • accepts the path to the dynamic library via an environment variable: LD_LINUX_PATH
  • moved from getopt -> argparse
  • removed unnecessary newlines from end

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