setupapi: Implement SetupGetInfInformation [take 2]

[James Hawkins]

Hi,

This version takes into account the fact that SetupGetLineText returns
the size in characters when computing the information size.

This is the first part of the fix for bug 4355.  The next step is to
implement SetupQueryInfFileInformation.

Changelog:
* Implement SetupGetInfInformation.

 dlls/setupapi/parser.c |  255 ++++++++++++++++++++++++++++++++++++++++++++++++
 dlls/setupapi/stubs.c  |   12 --
 include/setupapi.h     |    6 +
 3 files changed, 261 insertions(+), 12 deletions(-)

--
James Hawkins
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