Update warnings in kmem debug code

Update warnings in kmem debug code

This fix was long overdue.  Most of the ground work was laid long
ago to include the exact function and line number in the error message
which there was an issue with a memory allocation call.  However,
probably due to lack of time at the moment that informatin never
made it in to the error message.  This patch fixes that and trys
to standardize the kmem debug messages as well.