Update logic added by commit 099934e (Add generator expression
support to static code analysis hooks, 2023-03-24, v3.27.0-rc1~261^2),
and preserved by commit 993dde9 (TargetGenerator: Factor out
generation of code check rules, 2023-05-12, v3.27.0-rc1~84^2~2), to
handle a generator expression that evaluates to the empty string.

If `<LANG>_CPPCHECK`, `<LANG>_CPPLINT`, `<LANG>_CLANG_TIDY`, or
`<LANG>_INCLUDE_WHAT_YOU_USE` are empty after evaluating generator
expressions, do not run their lints.

Fixes: #25265

80df7b1 Linting: Fix empty evaluated genex

Acked-by: Kitware Robot <kwrobot@kitware.com>
Tested-by: buildbot <buildbot@kitware.com>
Merge-request: !8833

Update the Clang version checks added by

* commit eacacc7 (Clang: use -std=c++23 for Clang 17.0+,
                     2023-05-08, v3.27.0-rc1~115^2)
* commit 0183956 (Clang: C++26 support,
                     2023-05-16, v3.27.0-rc1~85^2)

to account for Android NDK r26's distribution of a Clang based on a
development version of LLVM/Clang 17.0 that pre-dated addition of
these flags.

Follow the pattern from commit 12e6796 (Android: Do not pass
non-existent Clang -std flags, 2018-04-02, v3.12.0-rc1~284^2),
which fixed the same problem for `-std=c++17`.

Fixes: #25281

75e9918 Android: Require Clang 18 for -std=c++23

Acked-by: Kitware Robot <kwrobot@kitware.com>
Reviewed-by: Raul Tambre <raul@tambre.ee>
Merge-request: !8847

…timeout

Since refactoring in commit 0a5aeaf (cmCTestRunTest: Consolidate test
timeout selection logic, 2023-05-04, v3.27.0-rc1~120^2) we accidentally
truncate `--timeout` values to ctest's default `TimeOut`.  Fix the
logic to prefer the flag whenever the `TIMEOUT` property is not set.

In combination with the prior refactoring, this also fixes a bug that
caused `--timeout` values of 10000000 seconds or more to be ignored.

Fixes: #23979

Improve the documentation from commit 46896d9 (foreach(): loop
variables are only available in the loop scope, 2021-04-25,
v3.21.0-rc1~245^2) to follow policy documentation convention.

Fixes: #25224
Inspired-by: Marius Messerschmidt <marius.messerschmidt@googlemail.com>

d267c12 ctest: Restore support for --timeout values higher than default test timeout
dd779a4 Tests: Clarify RunCMake.CTestTimeout case name

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: buildbot <buildbot@kitware.com>
Merge-request: !8851

55bf2a3 Help: Document CMP0124 behavior on already-set variables

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !8850

Fixes: #25292

25644a7 FindPostgreSQL: Add support for version 16

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !8854