Record more policies on targets when created

Policies CMP0027, CMP0038, and CMP0046 have per-target meaning so
record the policy settings on targets as they are created.
Tests: Simplify and document policy scopes in RunCMake.CMP* tests

Drop unnecessary NO_POLICY_SCOPE options.  Document why the remaining
options are necessary.
CMake Nightly Date Stamp
Merge topic 'dev/string-apis'

b633b263 CPackWiX: Fix test to build with expected config
191f25e2 stringapi: Prevent a NULL dereference in WiX
219d6ad6 speedup: Avoid excess iterator dereferences
caaad357 speedup: Cache strings for comparisons
7abf4e31 stringapi: Use strings for dependency information
94fc63e2 stringapi: Use strings for cache iterator values
85fc9f26 stringapi: Command names
6557382d stringapi: Use strings for program paths
1a1b737c stringapi: Use strings for generator names
24b5e93d stringapi: Use strings for directories
11ed3e2c stringapi: Add string overload for the Def struct
b3bf31a5 stringapi: Miscellaneous char* parameters
5af95c39 typo: Match argument name with the header
2b17626e stringapi: Pass strings as install directories in CPack
3def29da stringapi: Use strings for feature arguments
acb116e3 stringapi: Return a string reference for the configuration
...
Merge branch 'master' into next
libarchive: Fix compliation with Open Watcom
Merge topic 'watcom-compile-libarchive' into next

52285a99 libarchive: Fix compliation with Open Watcom
Merge topic 'fix-policy-scopes' into next

50fd0a33 Tests: Simplify and document policy scopes in RunCMake.CMP* tests
b1bbee3e Record more policies on targets when created