setupapi: Support signature $Windows NT$ in SetupDiGetINFClassA/W too.
setupapi/tests: Test signature $Windows NT$ in SetupDiGetINFClassA too.
msi: Constify a character string.
msxml3: Constify a character string.
rpcrt4: Constify a character string.
scrrun: Constify a character string.
usp10: Constify a character string.
setupapi: Constify a character string.
include: Add more Task Scheduler interface definitions.