allocators: allow pool_create at NLSO ctor time
lib: add rand() function based on libc rand and self-test. (this allows
easily returning a random number within a range, and avoids a number of
pitfalls - the naive rand()%range approach is baaad)
precompiled: add self_test.h, so that self tests won't be accidentally
disabled by forgetting to include the header
file_cache: add self-test; fixed 2 bugs that exposed (was incorrectly
splitting large blocks and not setting class_size bit properly). fix
weird corner case in BlockMgr (attempting to free LRU block but it is
locked).
file_io, wdbg_sym: tiny fixes
This was SVN commit r3461.
adts.h: add Cache (landlord algorithm), move DynHashTbl here from
vfs_tree; expand RingBuf and fix its iterator
allocators: minor tweaks+bugfixes; add SingleAllocator C++ wrapper
config, types: avoid stupid ICC warnings
lib: add round_down, u32_from_u16, SAFE_FREE
This was SVN commit r3414.
