[PSDK]

[PSDK]
Import strsafe.h from mingw-w64. It's more complete compared to our headers

[DDK]
Import ntstrsafe.h from mingw-w64 (converted from strsafe.h). It's more complete compared to our headers

[NTOSKRNL]
Use sizeof instead of magic numbers

Let's use strsafe functions now instead of strncpy/wcsncpy, which doesn't always NULL terminate :)

svn path=/trunk/; revision=51135