boost: support C++11 mode.

* Add info about option renaming: '--with-c++11' -> '--c++11'.
  - Require C++ dependencies with C++11 support when requesting '--c++11'.
* Building MPI python support in C++11 mode fails. Disable.
open-mpi: support C++11 mode.

* Disable silent rules for verbose build log.
* Include upstream patch to fix C++11 reserved string literal.

Closes #21452.
poco: support C++11 mode.

Closes #17750.
icu4c: support C++11 mode.

* Enable verbose build log.
yaml-cpp: support C++11 mode.

* Requires dependencies built with C++11 when requesting C++11 mode.

Closes #16162.
protobuf: support C++11 mode.

Closes #19141.
open-scene-graph: support C++11 mode.

Closes #19999.
geos: support C++11 mode.

Closes #22697.