Otherwise, changes in source code symbolically-linked into the
workspace will not be considered when deciding whether to invoke
e.g. Ninja.
This change is strongly preferable to asking people to remove
.mu_build_build_timestamp to force a Ninja run.
Deals reasonably gracefully with symbolic link loops, at least in
trivial cases: "find: File system loop detected"
Type: improvement
Signed-off-by: Dave Barach <dave@barachs.net>
Change-Id: I6666c84861de5e8b8aebcb94158f53526aded089
1b576e0aa0