Do not use the system ninja

Always bootstrap and use the bundled ninja to avoid incompatibilities
between our bundled gyp and the system ninja, which might be quite
old.

This patch also removes the ninja location caching, as updating the
cache would trigger a re-run of qmake and gyp on all the project,
while the benefit of using the cache in this case are low.

Change-Id: I843cbe20e1153caecbda00ab3d45a34d560b2423
Reviewed-by: Andras Becsi <andras.becsi@digia.com>
Reviewed-by: Zoltan Arvai <zarvai@inf.u-szeged.hu>

0 files changed, 0 insertions, 0 deletions