[PATCH v2] msvcrt: Fix reading BOM-less files opened with ccs=unicode

[Piotr Caban]

From: Martin Storsjo

This fixes a regression in running MSVC 2010 in wine, when reading
.def files (regressed in b0ab1b76029eaface724a28483fe8b0ea36029dc).

Signed-off-by: Martin Storsjo 
Signed-off-by: Piotr Caban 
---
v2:
  - changed the implementation so internal fd->exflag value is correct
  - removed C++ style comments

dlls/msvcrt/file.c       |  6 ++++--
  dlls/msvcrt/tests/file.c | 34 ++++++++++++++++++++++++++++++++++
  2 files changed, 38 insertions(+), 2 deletions(-)