erased empty line.
debug-dump-kvs function is renamed to follow contract naming rule.
modified command runner framework.
added assertion check of command name following contract naming rule.
changelog:
* lib/rims/cmd.rb: add assertion check of command name following contract naming rule.
debug-dump-kvs command. read-only GDBM DB open.
changelog:
* lib/rims/gdbm_kv.rb, lib/rims/cmd.rb: read-only GDBM DB open at debug-dump-kvs command.
rename key-value store filename.

kv.rb -> kvs.rb
gdbm_kv.rb -> gdbm_kvs.rb
changelog:
* rename key-value store filename (kv.rb -> kvs.rb, gdbm_kv.rb -> gdbm_kvs.rb).
namespace for new db.
core db. defined basic API.
core db. internal utilities.
number value accessor.
core db. internal utilities.
string value accessor.
core db. internal utilities.
number set value accessor.
core db. internal utilities.
number value increment/decrement.
core db. internal utilities.
string set value accessor.
core db. internal utilities.
object value accessor.
meta db. test case is added.
meta db. defined cnum attribute.
meta db. defined uidvalidity attribute.
meta db. defined internal message id attribute.