[PATCH 2/8] gdi32: Use pthread mutex instead of gdi_section.

[Jacek Caban]

Signed-off-by: Jacek Caban <jacek(a)codeweavers.com>
---
GDI_CheckNotLock can't be implemented directly on top of pthread, we 
would need to keep track of owning thread ourselves. Since it's used 
only for an assert, I replaced it with comments instead.

  dlls/gdi32/dc.c            | 10 ++---
  dlls/gdi32/dibdrv/dc.c     |  2 +-
  dlls/gdi32/gdiobj.c        | 83 ++++++++++++++++----------------------
  dlls/gdi32/ntgdi_private.h |  1 -
  4 files changed, 40 insertions(+), 56 deletions(-)