Version up for next release.
Add .gitignore for Perl module directory.
Add printfs in block-china.c
Change "block-china.c" to not use sscanf. Add changelog.

There is a bug on cpantesters, see e.g.

http://www.cpantesters.org/cpan/report/960f731f-6ccc-1014-b2d4-192325572501

This bug is caused by some kind of problem with the routine ip_to_int
in "block-china.c", which relies on sscanf to read the numbers. The
problem occurs on Microsoft Windows only. I have changed the routine
to now use another C routine (from usage-record.c).

I have also added a file "Changes" since the module seems to be
getting some attention (on "cpanratings.org").