RFC: selection of shift-and-invert mode in eigs#5776

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acroy wants to merge 3 commits intoJuliaLang:masterfrom acroy:eigs

+21-6

Commits on Feb 19, 2014

Changed selection of shift-and-invert mode in eigs. Added test for inverse iteration. Docs updated.
acroy
committed
Change default of sigma to nothing.
acroy
committed

Commits on Feb 23, 2014

Only non-empty sigma selects shift and invert mode (implies which=LM). Test updated.
acroy
committed