support for msys2 installations on win64#90

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planthaber wants to merge 4 commits intorock-core:masterfrom

planthaber:msys2

Commits on Sep 15, 2015

support for msys2 installations on win64
planthaber
committed

Commits on Sep 16, 2015

added missing osdeps, fixed link behavior
planthaber
committed

Commits on May 23, 2016

osdeps added for ruby 22 and 23
JanPaul73
committed

Commits on May 24, 2016

Merge pull request #1 from JanPaul73/msys2
planthaber
committed