garray_getfloatarray warning is wrong
The warning for garray_getfloatarray says:
"warning: extern using garray_getfloatarray() won't work in 64-bit version"
Now that we have begun to support PD_FLOATSIZE == 64 this is wrong. For example, purr-double running on a 32-bit machine should trigger this warning as well.
Consequently, the warning should be made more precise.