Add dbm gem as ruby-dbm package version 1.1.0.
Note:
* Ruby 2.6 contains dbm 1.0.0.
* Ruby 2.7 and Ruby 3.0 contains dbm 1.1.0, but no conflict.
* Ruby 3.1 dose not contain dbm.
DBM
The DBM class provides a wrapper to a Unix-style dbm or Database Manager
library.
Dbm databases do not have tables or columns; they are simple key-value data
stores, like a Ruby Hash except not resident in RAM. Keys and values must
be strings.
The exact library used depends on how Ruby was compiled. It could be any of
the following:
* The original ndbm library is released in 4.3BSD. It is based on dbm
library in Unix Version 7 but has different API to support multiple
databases in a process.
* Berkeley DB versions 1 thru 5, also known as BDB and Sleepycat DB, now
owned by Oracle Corporation.
* Berkeley DB 1.x, still found in 4.4BSD derivatives (FreeBSD, OpenBSD,
etc).
* gdbm, the GNU implementation of dbm.
* qdbm, another open source reimplementation of dbm.
All of these dbm implementations have their own Ruby interfaces available,
which provide richer (but varying) APIs.
and this package covers both Ruby 1.8 base and 1.6 base.
This is a Ruby extension to DBM library (including Berkley DB's DBM
compatible one), which is actually a part of the Ruby distribution.
