- Change "re-run CMake" to "re-run CMake configuration steps" because
`west build -v ...` displays `cmake --build ...` every time which can
confuse non-experts.
- Explain what is the actual issue with re-configuring: it makes the
incremental builds slower. But not much slower:
```
$ west build -b qemu_x86 samples/hello_world/ -DCONFIG_OUTPUT_STAT=y
[133/133] Linking C executable zephyr/zephyr.elf
$ west build -b qemu_x86 samples/hello_world/ -DCONFIG_OUTPUT_STAT=y
[16/16] Linking C executable zephyr/zephyr.elf
```
- Explain that the best solution is to simply skip to the next section
Signed-off-by: Marc Herbert <marc.herbert@intel.com>
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