[PATCH 4/7] widl: generate deterministic temporary filenames

[Marko Semet]

Using xorshift* as pseudorandom number generator. It get initialised
with the environment (sorted by name) and arguments.

Signed-off-by: Marko Semet 
---
 tools/widl/parser.l |   4 +-
 tools/widl/utils.c  | 156 ++++++++++++++++++++++++++++++++++++++++++++
 tools/widl/utils.h  |   6 ++
 tools/widl/widl.c   |   3 +-
 4 files changed, 166 insertions(+), 3 deletions(-)