* brp-25-symlink: Detect if a link points inside the build root
* brp-25-symlink: Remove unused $link part of the case statement
* brp-25-symlink: Print all errors before exiting
* Makefile: enable -O2, use standard variables and clean up
* simplify split_paths using std::getline
OBS-URL: https://build.opensuse.org/package/show/Base:System/brp-check-suse?expand=0&rev=104