Fixed that REXML fix would break on earlier versions of ruby (Frederick Cheung) [state:resolved #987]

This reverts commit 6e2851d4.

This reverts commit 36c6aa01.

This reverts commit e9a8e005.

Add special AssociationReflection methods for creating association objects, and modify the code base to use those methods instead of creating association objects directly. This allows plugins to hook into association object creation behavior.

[#986 state:resolved]
Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

Make the options that has_many, belongs_to and other association generation methods can accept, configurable.

[#985 state:resolved]
Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

[#1000 state:resolved]
Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

[#1001 state:resolved]
Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

[#1002 state:resolved]
Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

Revert "Revert "Raise UnknownAttributeError when unknown attributes are supplied via mass assignment""

This reverts commit 41efd738.

Signed-off-by: NJoshua Peek <josh@joshpeek.com>

This reverts commit 108db00a.

Ruby 1.9 compat: use method_defined? instead of instance_methods.include?  Don't encourage args abuse by flattening.

Will need community help to fill out what #reset! should do for each adapter
Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

This happens on jruby due to a bug, but also on historically marshalled data.

Signed-off-by: NMichael Koziarski <michael@koziarski.com>