2010-01-23 winebarrel

* fixes bug: [ruby-dev:40120] SEGV on zipruby with irb

2009-06-11 winebarrel

* fixes bug: C macro mistake (reported by SHITAMORI Akira)

2009-05-16 winebarrel

* improve Zip::Archive#add_io, replace_io, add, replace

* fixes bug: Zip::Archive#add_io, <<

* add method: Zip::Archive#add_dir

* zipruby/README.txt: fixes example code.