v2.7.1
maint: update all copyright year number ranges
Use gnulib errno module instead of our own default ENOTSUP fallback
Introduce function to lstat all input files
Improve the previous commit
Improve handling of LF vs. CRLF line endings
Change the type of *_needs_removal from int to bool
Ignore when preserving extended attributes is not supported or allowed
Move all source and header files into src/