* Squashed 'src/dashbls/' content from commit 66ee820fbc
git-subtree-dir: src/dashbls
git-subtree-split: 66ee820fbc9e3b97370db8c164904af48327a124
* build: stop tracking build-system generated relic_conf.h.in
* build: add support for building bls-signatures from local subtree
* build: add exclusions to linting scripts and filters
* build: drop bls-signatures (bls-dash) from depends
fac86ac7b3ceac2f884412c7a9f4bd5bab5e3916 scripted-diff: Add missed copyright headers (Hennadii Stepanov)
6fde9d5e47fc9a1042b3fb68031eab5bf55e508d script: Update EXLUDE list in copyright_header.py (Hennadii Stepanov)
1998152f15fd2b0e83f5068c375a34feaf73db8c script: Add empty line after C++ copyright (Hennadii Stepanov)
071f2fc204f542c5a287ca8835115a2ee0bf2f50 script: Add ability to insert copyright to *.sh (Hennadii Stepanov)
Pull request description:
This PR improves `contrib/devtools/copyright_header.py` script and adds copyright headers to the files in `src` and `test` directories with two exceptions:
- [`src/reverse_iterator.h`](https://github.com/bitcoin/bitcoin/blob/master/src/reverse_iterator.h) (added to exceptions)
- [`src/test/fuzz/FuzzedDataProvider.h`](https://github.com/bitcoin/bitcoin/blob/master/src/test/fuzz/FuzzedDataProvider.h) (added to exceptions)
On master 5622d8f3156a293e61d0964c33d4b21d8c9fd5e0:
```
$ ./contrib/devtools/copyright_header.py report . | grep zero
25 with zero copyrights
```
With this PR:
```
$ ./contrib/devtools/copyright_header.py report . | grep zero
2 with zero copyrights
```
~I am uncertain about our copyright policy with `build_msvc` and `contrib` directories content, so they are out of scope of this PR.~
ACKs for top commit:
MarcoFalke:
ACK fac86ac7b3ceac2f884412c7a9f4bd5bab5e3916
Tree-SHA512: d7832c4a7a1a3b7806119775b40ec35d7982f49ff0e6199b8cee4c0e0a36e68d51728b6ee9924b1c161df4bc6105bd93391b79d42914357fa522f499cb113fa8
688f665a5e526fda0fb797bf617412fe9cbe64fd Scripts and tools & Docs: Used #!/usr/bin/env bash instead of obsolete #!/bin/bash, added linting for .sh files shebang and updated the Developer Notes. (vim88)
Pull request description:
As it was discussed in [#13510](https://github.com/bitcoin/bitcoin/pull/13510), it is better to use `#!/usr/bin/env bash` instead of `#!/bin/bash`.
Tree-SHA512: 25f71eb9a6a0cdc91568b5c6863205c5fe095f77a69e633503a2ac7805bd9013af8538e538c0c666ce96a28e3f43ce7a8df5f08d4ff007723bb588d85674f2da
