Deprecate duplicated methods of Collection

Duplicated methods between Collection and Iterable are deprecated.
GROOVY-2900: Allow Ant targets declaration by AntBuilder without immediate execution
GROOVY-6853: upgrade Ivy to 2.4.0-rc1
GROOVY-3971: adding method to class in ASTBuilder not working
GROOVY-3971: adding method to class in ASTBuilder not working (now supports methods, fields, properties, constructors)
Merge pull request #439 from paulk-asert/groovy3971

GROOVY-3971: adding method to class in ASTBuilder not working
prefactor for PR#430 (copy an example in the javadoc that would otherwise be lost)
Merge pull request #438 from paulk-asert/groovy2900

GROOVY-2900: Allow Ant targets declaration by AntBuilder without immedia...
Merge pull request #430 from yukoba/patch-2

Deprecate duplicated methods of Collection