Merge #16768: test: Make lint-includes.sh work from any directory

490da63 Make lint-includes.sh work from any directory (Kristaps Kaupe)

Pull request description:

  Before this change it works from root folder of bitcoin git repo, but if you do `cd test/lint; ./test-includes.sh`, you will have a lot of false positive messages like this:
  ```
  Good job! The circular dependency "chainparamsbase -> util/system -> chainparamsbase" is no longer present.
  Please remove it from EXPECTED_CIRCULAR_DEPENDENCIES in ./lint-circular-dependencies.sh
  to make sure this circular dependency is not accidentally reintroduced.

  Good job! The circular dependency "index/txindex -> validation -> index/txindex" is no longer present.
  Please remove it from EXPECTED_CIRCULAR_DEPENDENCIES in ./lint-circular-dependencies.sh
  to make sure this circular dependency is not accidentally reintroduced.

  ```

Top commit has no ACKs.

Tree-SHA512: 07fa69cb2883181dcee922191acac4b242722eeb2916cdffdc7163421302b22f3c9525aaf4c754a9dba1c307032c05285e38191d5c6aabc894321f8a27bbceaa

Author: MarcoFalke

test/lint/lint-includes.sh

@@ -11,6 +11,9 @@
 export LC_ALL=C
 IGNORE_REGEXP="/(leveldb|secp256k1|univalue)/"
 
+# cd to root folder of git repo for git ls-files to work properly
+cd "$(dirname $0)/../.." || exit 1
+
 filter_suffix() {
     git ls-files | grep -E "^src/.*\.${1}"'$' | grep -Ev "${IGNORE_REGEXP}"
 }