As per title
Partial backport of PR11651
make check ninja check
Build Bitcoin-ABC / Diffs / Bitcoin-ABC Diff Testing started.
Build Bitcoin-ABC / Diffs / Bitcoin-ABC Diff Testing passed.
separating line between system libs and internal dependencies
Nit: This file needs a copyright notice
system libs section should be last
this newline shouldn't exist so that csignal is with the other system libs
Fix ordering + missing copyright