Changes since 0.11.1: * More efficient header commits. * Use O_APPEND to save lseeks. * Faster implementation of pread_iolist(). Further improves p

Changes since 0.11.1: * More efficient header commits. * Use O_APPEND to save lseeks. * Faster implementation of pread_iolist(). Further improves performance on concurrent reads. * Added authentication caching * Faster default view collation. * Added option to include update_seq in view responses. from http://couchdb.apache.org/downloads.html http://couchdb.apache.org/downloads.html