Deprecation warnings regarding c++0x standard.

[Former user]

Whilst compiling, errors warning of the use of 'auto_ptr's pop up. As Imebra must be compiled-at-once with code which might (necessarily) rely on this standard, the use of auto_ptrs should be swapped with shared_ptrs.

(^This, or provide some template instantiation so that Imebra won't need to be compiled at once.)

[Former user]

An example of these warnings is at: https://gist.github.com/1610568

I don't have a chance at the moment to try swap auto_ptr with shared_ptr, but I doubt it would be very difficult.

[Paolo Brandoli]

• Closes #87 (Deprecation warnings regarding c++0x standard)

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