In commit b795c96 (CPack/NSIS: Fix uninstall command when run from
installer, 2022-03-21, v3.23.0-rc5~9^2~1) we incorrectly removed the
`_?` parameter when calling the uninstaller during installation.
This parameter is however essential for ExecWait to actually wait for
the uninstaller to finish.  Without it, the uninstaller is started in
the background and installer and uninstaller run at the same time.

See https://nsis.sourceforge.io/Docs/Chapter3.html#installerusageuninstaller

Add back the `_?` parameter to fix this regression.  Use another
approach to solve the problem motivating the original change.

Fixes: #24041

Merge-request: !7774

This was accidentally left out of commit c050d6a (string(TIMESTAMP):
add %f specifier for microseconds, 2022-01-27, v3.23.0-rc1~59^2).

Merge-request: !7796

Some projects pass a raw `-std=` flag to the compiler in the
`try_compile` project.  If they do not set CMP0128 to NEW,
we should not append a `-std=` flag where we did not before
the policy was added.

Fixes: #24063

Merge-request: !7803

The `remove_filename` and `replace_extension` methods compute an offset
between the whole path in a `std::string` and a part of a path in a
`std::string_view`.  This is done by subtracting their `.data()`
pointers.  However, C++17 adds a non-const `.data()` through which
modification of the string is allowed.  This means the copy-on-write
implementation used by the pre-C++11 std::string GNU ABI must reallocate
if the string has been copied.  Our subtraction then computes an offset
between two different allocations, which is undefined behavior.

The workaround in commit b3ca4f9 (cm/filesystem: Work around crash
when compiled for CYGWIN/MSYS runtime, 2021-04-22, v3.21.0-rc1~271^2~2)
avoided the problem by calling the non-const `.data()` to reallocate
before constructing the `string_view`.  Instead, explicitly call the
const `.data()` method on the string, which does not reallocate.

Fixes: #22090, #23328

Merge-request: !7813

The test added in commit 50e90e2 (try_compile: Honor CMP0128 setting
in test project, 2022-10-18, v3.25.0-rc2~4^2) requires that the compiler
support C++11 mode, so do not run it on GNU compilers that are too old.

Merge-request: !7821

Revert commit bbdb000 (GlobalNinjaGenerator: enlarge file stream
buffer, 2022-01-25, v3.23.0-rc1~68^2).  Somehow `rdbuf()->pubsetbuf()`
is resetting our imbued locale and `cm_codecvt` that handles encoding.

Fixes: #24089

Issue: #24089

Merge-request: !7833