Another update

1. 41824bd model: An experimental support for LFU replacement policy (need further adjustments) by Alexander Afanasyev · 11 years ago
2. 6978611 model: Some compilers got confused with "typedef policy policy". Renaming the typedefed name to policy_base by Alexander Afanasyev · 12 years ago
3. c3cc0b3 model: New content store variations: support for content freshness by Alexander Afanasyev · 12 years ago
4. 8566f45 model: Adding "new" content store with ability to track lifetime of entries by Alexander Afanasyev · 12 years ago
5. 991a0cc model: Generalizing content store implementation by Alexander Afanasyev · 12 years ago
6. e095f0f docs: Restructuring docs and adding new section about customizing Content Store and PIT by Alexander Afanasyev · 12 years ago
7. bd9c18e Solving a couple of bugs resulting from the packet format changes. Code compiles, but haven't fully tested yet by Alexander Afanasyev · 12 years ago
8. 042b4a7 fw+doc: Renaming and extending limit extenstion by Alexander Afanasyev · 12 years ago
9. 1cd79ae docs: Documentation update by Alexander Afanasyev · 12 years ago
10. 1a2df6a Small reorganization of utils/ folder contents by Alexander Afanasyev · 12 years ago
11. 29c19b9 Content Store extension. Now it supports the same enumeration interface available for PIT and FIB by Alexander Afanasyev · 12 years ago
12. 2b4c947 Another set of refactoring by Alexander Afanasyev · 12 years ago