Bitcoin-Qt (Windows only): add ASLR and DEP linker flags
- for extra security on Windows: enable ASLR and DEP via GCC linker flags
GCC linker flag description:
--dynamicbase The image base address may be relocated using address space layout randomization (ASLR). This feature was introduced with MS Windows Vista for i386 PE targets.
--nxcompat The image is compatible with the Data Execution Prevention.
This feature was introduced with MS Windows XP SP2 for i386 PE targets.