Help: Revise CMP0054 documentation formatting and links
Help: Add notes for topic 'if-sanity'
Merge topic 'if-sanity' into next

dbb8d6cf Help: Add notes for topic 'if-sanity'
2f55b956 Help: Revise CMP0054 documentation formatting and links
If: Introduce policy CMP0054 - don't dereference quoted variables in if()
Merge topic 'if-sanity' into next

b565eb75 If: Introduce policy CMP0054 - don't dereference quoted variables in if()