feature addition#2

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xiaoqiangwang wants to merge 3 commits intoareaDetector:masterfrom xiaoqiangwang:master

+237-16

Commits on Jun 12, 2014

close shutter exactly after exposure time elapsed. add new records for
xiaoqiangwang
committed
add temperature status and background subtract into MEDM panel
xiaoqiangwang
committed

Commits on Mar 12, 2015

Use type library instead of exe. This makes it build on any windows PC and it works with both WinSpec and WinView.
xiaoqiangwang
committed