Bug 12284 fixed: Completion in console could to a crash (or deadlock)

Change-Id: I01ff5da39f5a25b1a82ca5629867f2bf61fb6c49
* Bug #11812 fixed - Upper/lower case issues in the Xcos documentation fixed.

Change-Id: I7376bddcfd3575bd1c8bb0f9091806c734e81689
* Bug #12139 fixed - eigs run out of memory for sparse matrices.

Change-Id: I839f684f8cc0203f4e47f488d80c7d63681b0f5c