[setupapi] added tests for SetupDiGetINFClassA (try3)

[Stefan Leichter]

(try3)
fixed failing tests on nt4
(try2)
fixed failing tests on vista, win2k3, win2k8, win7
---
 dlls/setupapi/stubs.c         |    1 +
 dlls/setupapi/tests/devinst.c |  149 
+++++++++++++++++++++++++++++++++++++++++
 2 files changed, 150 insertions(+), 0 deletions(-)
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