Merge topic 'cmake-self-symlinks'

0994bc79 cmake: Preserve symlinks in references to itself when possible
0925abb0 cmSystemTools: Invert condition to make non-bootstrap logic easier to follow
46ac3082 cmSystemTools: Factor out helpers from FindCMakeResources
b91ec8c4 cmSystemTools: Clarify decision to look for resources from the build tree
cbee4eed cmSystemTools: Re-order resource and tool finding logic
f6acf1f7 cmSystemTools: Reduce rightward drift in success path on UNIX
962e4479 cmSystemTools: Clarify app bundle layout on macOS
56632dda cmSystemTools: Remove redundant filesystem access on Windows
...

Acked-by: Kitware Robot <kwrobot@kitware.com>
Tested-by: buildbot <buildbot@kitware.com>
Acked-by: Carlo Cabrera <carlo.antonio.cabrera@gmail.com>
Merge-request: !9987