use EXECUTABLE_SUFFIX instead of exe_ext in yasm.gyp

BUG=95406


Review URL: http://codereview.chromium.org/9139038

Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: b1947f5b76c636e2ba6277c5bbeed3c2083a9ea2
1 file changed
tree: c54ec80af0cbaecb9209f18c6f1f7660d9d1243a
  1. README.chromium
  2. source/
  3. yasm.gyp
  4. yasm_compile.gypi