Properly sanitize Windows reserved names in evaluator paths

[lefou]

In case a segment path matches one of the reserved name of the Windows filesystem namespace, we insert a ~ directly after the offending segment part.

Here is a excerpt from an official Win32 documentation:

• Do not use the following reserved names for the name of a file:

CON, PRN, AUX, NUL, COM0, COM1, COM2, COM3, COM4, COM5, COM6, COM7, COM8, COM9, COM¹, COM², COM³, LPT0, LPT1, LPT2, LPT3, LPT4, LPT5, LPT6, LPT7, LPT8, LPT9, LPT¹, LPT², and LPT³. Also avoid these names followed immediately by an extension; for example, NUL.txt and NUL.tar.gz are both equivalent to NUL. For more information, see Namespaces.

We do the insertions on all platforms, not only Windows, for consistency of the out/ folder.

Fix #2961