* Update `add_license` script
* run script
* add `remove duplicate lines script` and run it
* Revert changes `English spaces`
* strip whitespaces
* Revert `GPL` in files with `apache/mit license`
* don't append `gpl license` in files with other lic
* Don't append `gpl header` in files with other lic.
* re-ran script
* include c and cpp files too
* remove duplicate header
* rebase nit
* Decode patricia node with UntrustedRlp
(cherry picked from commit efb993b8e7ce087f092cb8c2f633c62ad87e4fb8)
* Replace Rlp with UntrustedRlp in triedbmut
* Handle node decode results in trie
