Added missing method "set_encoding" to ARGF class.
Support RubyGems system update.
Added unicode surrogate pair for regular expression used by build Builder gem.
Renamed: ir -> iruby.

Added ruby 1.9.2 pre-installed gem specifications.

Use the Ruby standard library without too many changes. (Keep end of lines as in the MRI files.)

Added support for dummy libraries (Ex.: ironruby/digest/sha2.so).
Read encoding for MutableString and RubyRegex.
TryGetDefaultConversionAction for System::String only System::String and MutableString are accepted for DefaultConversion.
Added -disableDebugLog option.
Get first IRubyObject_get_ImmediateClass found. Initialize module's mixins.
Fixed ConvertToClrStringAction.
Don't force core.autocrlf on irtests.
Fixed CheckedMonitor.
Fixed encoding.
Binary => ASCII-8BIT
If searching a default constructor (ruby allocator) for System::String then return MutableString default constructor (ruby allocator).
Implemented ruby option -c.
Fixed MutableString.BinaryContent.GetSlice.

Revert "Fixed returned matched captured groups' values. (encoding issue, index vs. byte-length characters, NOT COMPLETE)"

This reverts commit 62a5844b53a544ada6d232053d856d40003639f8.

Fixed returned matched captured groups' values. (encoding issue, index vs. byte-length characters, NOT COMPLETE)
Implemented freeing objects IDs. Added support to track object using object's ID.