EmulatorPkg/Unix/Host: Disable inline/optimizations for XCODE5

EmulatorPkg/Unix/Host: Disable inline/optimizations for XCODE5

* Disable XCODE5 compiler optimizations fort Unix/Host.
* Disable inline of SecGdbScriptBreak() to improve
  compatibility with XCODE5
* For X64 XCODE5 builds place output Host application
  in $(BIN_DIR) to match all other EmulatorPkg Host
  application builds.

Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Andrew Fish <afish@apple.com>
Cc: Ray Ni <ray.ni@intel.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
Acked-by: Jordan Justen <jordan.l.justen@intel.com>
Tested-by: Andrew Fish <afish@apple.com>