When the CBE needs to generate floating point constants that cannot be
represented in C (NaN, Infinity, etc), it creates a hexadecimal value and places
it in a global variable.

Since these global variables are not declared static, they are visible to other
translation units generated by the CBE which may have constants of the same name
with different values.

To fix this, these global constants should be declared static.

This will be fixed for LLVM 1.2.  I've assigned myself to it.

Fixed with
http://mail.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20040223/012282.html.