In svn:3490 the following code crashes:
include std/machine.e
atom x = allocate( 4 )
std/io.e allocates some memory, but due to the way std libs are included, when this occurs, the constants in memconst.e have not been initialized yet.
Added init checks for constants that can't be resolved at runtime. Switched around the include order for memory.e and machine.e to make sure those constants get defined before they're used.