Introduce class apd (automatic pointer destruction)
Introduce MemoryTracker
Weak symbols in MemoryAllocationLib to be able to redefine them (see
MemoryTracker).
Embed LegacyOS instead of a pointer.
Fixed a lot of memory leaks.
Rename strerror to efiStrError because of conflict when run cpp_tests on
Mac.
Switch base64_decode_block to long to avoid warning and cast.
Correct GetTableType4(). Size was used without being initialized.