use specific hacking rules

Change-Id: I91cb5e30ec081262e2a590d64ba46fddadc7590f
Consolidating and standardizing x-delete-at format

Change-Id: Idc916da1c7fe1cc43a2c26f7f7ee1d4fcdd52c89
Expose some SLO constraints via /info

These are the ones that affect what requests a client can make; the
others are just time and speed limits, so they weren't as interesting.

Change-Id: I21c19c950227f02725aafc309a3996fc6749a383
Use constant time comparison in tempURL

Use constant time comparison when evaluating tempURL to avoid timing
attacks (CVE-2014-0006).

Fixes bug 1265665

Change-Id: I11e4ad83cc4077e52adf54a0bd0f9749294b2a48
Merge "Expose some SLO constraints via /info"
Merge "use specific hacking rules"
Merge "Use constant time comparison in tempURL"
Merge "Consolidating and standardizing x-delete-at format"