Added resource cache debug output to help track changes

With the spate of upcoming resource cache changes I would like a way to detect regressions in the cache's behavior. After a GM run this CL will print out a display like:

config: gpu 97c538
Budget: 256 items 16777216 bytes
                Entry Count: current 12 high 146
                Unlocked Entry Count: current 12 high 145
                Entry Bytes: current 16750800 high 119725568
                Detached Entry Count: current 0 high 13
                Detached Bytes: current 0 high 14133056
config: msaa16 97c538
Budget: 256 items 16777216 bytes
                Entry Count: current 12 high 146
                Unlocked Entry Count: current 12 high 145
                Entry Bytes: current 16750800 high 119725568
                Detached Entry Count: current 0 high 13
                Detached Bytes: current 0 high 14133056
config: debug 97c608
Budget: 256 items 16777216 bytes
                Entry Count: current 15 high 248
                Unlocked Entry Count: current 14 high 243
                Entry Bytes: current 4778460 high 32563732
                Detached Entry Count: current 0 high 13
                Detached Bytes: current 0 high 14133056

[bsalomon, 2012-08-21 19:44:51]

On 2012/08/21 19:36:11, robertphillips wrote:

LGTM

[robertphillips, 2012-08-22 10:57:23]

committed as r5220