[DefKorns]

Moves the Options Menu build from -std=c++11 to -std=c++14 and replaces the last bare new/delete pair with std::make_unique (Core Guidelines R.11/R.23).

Changes

• Makefile: -std=c++11 → -std=c++14. The Linaro GCC 4.9.4 toolchain supports C++14.
• SDL_Context::powerwatch: now a std::unique_ptr<PowerWatch> created with std::make_unique, and the manual delete in the destructor is gone. The member is destroyed after the destructor body, so PowerWatch is still released after SDL_Quit(), as before. Callers use powerwatch->buttonPress() unchanged.

Compatibility

• No new runtime dependency: every binary in the .hmod needs the same GLIBCXX symbol versions as the C++11 build (compared with objdump -T). make_unique is header-only.
• SDL_Context is no longer copyable: it holds a unique_ptr now. No code copies it, and copying it before would have deleted powerwatch twice.
• Add-ons with a vendored Options Menu: they compile the framework with their own flags, so they need C++14 before bumping the submodule. om_theme-selector, the gamepad tool and om-favorites are already on C++14.

Testing

• Plain and compat builds succeed with no warnings.
• Host characterization tests (local harness) pass with -std=c++14.
• Console (SNES Classic, plain build): options, save_manager and mod_uninstall installed.
  • Opening a submenu and going back works.
  • Save Manager and Module Uninstaller open and close.
  • The reset button (the powerwatch path) resumes the UI.