#42 Windows build settings security requirements

[Mat Marcus]

The following switches should be on in IDE builds and
in the appropriate Jamfiles:

Compiler flags:

/GS (Stack Buffer Overrun Detection)

Linker flags:
/SafeSEH (exception handling protection)
/NXCOMPAT (prevent code from executing in data
segments) after testing compat on a DEP system
/DYNAMICBASE (Address Space Layout Randomization
(ASLR)) after testing for ASLR viloations on Vista beta 2