Show all pointers in hex in leak reports

[jruderman]

STR: leak some resources (e.g. #1482)

Result:

Unreclaimed object found at 0x7fb101c14e30: res(140398219647488)
Unreclaimed object found at 0x7fb101c14c20: @res(140398219647488)
Unreclaimed object found at 0x7fb101e08d10: res(140398228512256)
Unreclaimed object found at 0x7fb101e08ce0: @res(140398228512256)

Expected:

Unreclaimed object found at 0x7fb101c14e30: res(0x7fb102025a00)
Unreclaimed object found at 0x7fb101c14c20: @res(0x7fb102025a00)
Unreclaimed object found at 0x7fb101e08d10: res(0x7fb102899e00)
Unreclaimed object found at 0x7fb101e08ce0: @res(0x7fb102899e00)

[jruderman]

Leak reports were added in 5ee89f3

[nikomatsakis]

Give 'em an inch, they ask for a mile! ;)

The leak report stuff just uses polymorphic log, which may or may not have the information required... I have to check whether ptrs and ints are distinguished in the shape tables ATM.

[emberian]

Given that the cycle collector is gone, I think this can be closed. @nikomatsakis?

[nikomatsakis]

I agree we can close this.