EmulatorPkg: Add -D DISABLE_NEW_DEPRECATED_INTERFACES

EmulatorPkg: Add -D DISABLE_NEW_DEPRECATED_INTERFACES

https://bugzilla.tianocore.org/show_bug.cgi?id=162

Update EmulatorPkg specific modules and libraries to use
safe string functions in BaseLib and safe PcdSetxx()
functions in PcdLib.  With these updates, the define
DISABLE_NEW_DEPRECATED_INTERFACES is enabled in the DSC
file.

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: Hao A Wu <hao.a.wu@intel.com>
Acked-by: Jordan Justen <jordan.l.justen@intel.com>
Tested-by: Andrew Fish <afish@apple.com>