Revert "Replace ZeroMemory() with SecureZeroMemory().  The MSDN article for ZeroMemory says: "To avoid any undesired effects of optimizing compilers, use the SecureZeroMemory function.""

This reverts commit 0533530d9f661b0ec19756382a8c99b679182b5f.

Conflicts:
	src/thirdparty/ResizableLib/ResizableState.cpp
	src/thirdparty/TreePropSheet/TreePropSheet.cpp