* all: simplify switches

* silly mistake

build: rename swarm deb package to ethereum-swarm; change swarm deb version from 1.8.x to 0.3.x (#16988)

* build: add support for different package and binary names

* build: bump up copyright date

* build: change default PackageName to empty string

* build, internal, swarm: enhance build/release process

* build: hack ethereum-swarm as a "depends" in deb package

* build/ci: remove redundant variables

* build, cmd, mobile, params, swarm: remove VERSION file; rename Version to VersionMeta;

* internal: remove VERSION() method which reads VERSION file

* build: fix VersionFilePath to Version

* Makefile: remove clean_go_build_cache.sh until it works

* Makefile: revert removal of clean_go_build_cache.sh

internal, vendor: update Azure blobstore API

* core/blockchain: export progress

* core: polish up chain export progress report a bit

* cmd: stop parsing bootnodes if one is invalid

* cmd/geth: require valid command as argument (or no arg)

build: deprecated ubuntu artful, enable ubuntu cosmic

build: noop clean during travis debsrc assembly step

build: fix bash->sh function declaration

cmd: Comment error

- Define an Interpreter interface
- One contract can call contracts from other interpreter types.
- Pass the interpreter to the operands instead of the evm.
  This is meant to prevent type assertions in operands.

core: fix typo in comment code

swarm: README.md

* fixed-typo

* core: fix txpool guarantee comment

* core/vm, params: implement EXTCODEHASH opcode

* core, params: tiny fixes and polish

* core: add function description

* core, crypto, params: implement CREATE2 evm instrction

* core/vm: add opcode to string mapping

* core: remove past fork checking

* core, crypto: use option2 to generate new address

consensus/clique: replace bubble sort by golang stable sort

eth/filters, interfaces: EIP-234 Add blockHash option to eth_getLogs

swarm: client-side MRU signatures ; BMT fixes ; network simulation tests

Our original wrapper code had two parts. One taken from a third
party repository (who took it from upstream Go) licensed under
BSD-3. The second written by Jeff, Felix and Gustav, licensed
under LGPL. This made this package problematic to use from the
outside.

With the agreement of the original copyright holders, this commit
changes the license of the LGPL portions of the code to BSD-3:

---
I agree changing from LGPL to a BSD style license.

Jeff
---
Hey guys,

My preference would be to relicense to GNUBL, but I'm also OK with BSD.

Cheers,
Gustav
---
Felix Lange (fjl):
I would approve anything that makes our licensing less complicated
---