[PATCH 1/2] winebuild: Check more target components for platform string.

[Jacek Caban]

Fixes parsing llvm style mingw target *-pc-windows-gnu.

Signed-off-by: Jacek Caban <jacek(a)codeweavers.com>
---
  tools/winebuild/main.c | 19 +++++++++++--------
  1 file changed, 11 insertions(+), 8 deletions(-)