Fix PR 142: the zlib filters were not updated in 1.9.11 to use zeroise
instead of clear, so the buffer ended up having size zero, which meant
the compression library could never actually do anything, and we would
infinite loop.

Also add buffer clearing to bzip2, which was missing it entirely.
propagate from branch 'net.randombit.botan' (head 8453f801979d78b448a2aff80d2042715a42e843)
            to branch 'net.randombit.botan.x509-path-validation' (head 084e8139f4b131b5aab6b6359e59324d7681488f)
Add bcrypt and keywrap examples
Tick version numbers for 1.9.14 release
Fix variable mask warning in Sun C++.

Make comment clearer on how to enable stlport4 in Sun C++
Update amalgamation copyright years
Split up deleting empty buffers with removing buffer slots from the
deque. This allows removing empty queues even if there are earlier
messages with outstanding data; the buffer slot remains so some memory
is still used, but reduced to just the pointer.
Tick to 1.9.15-dev
propagate from branch 'net.randombit.botan' (head dd068808e5bf87c982765a8bcc314996053a5bdd)
            to branch 'net.randombit.botan.c++0x' (head 34696d52a8148d64f7021b3e193fc56f051b9dd2)
Use unique_ptr instead of auto_ptr

Use std::to_string in bcrypt
Somewhat improved ARM support/autodetection
More notes
Modify SHA-224/SHA-256 so that it does the message expansion in
registers as needed (16 turns before the value is used), with indexes
fully precomputed. On a Core i7-860 with GCC 4.5.2, performance went
from 152 MiB/s to 167 MiB/s.
Use the same mesasge expansion trick in SHA-512. Performance on
an i7-860 goes from 197 MiB/s to 256 - a 30% improvement!
merge of '1bf20e797477a87c044a8fd74af47d872f630831'
     and '51e8d8cc3eb1c29e097bdc77e2773b0fe6d342af'
Shared lib should be marked as a dev release
Assume ARMs are little-endian by default; big-endian ARM seems to be a rarity.

GCC 4.3 on ARM converts __builtin_bswap32 into a jump into libgcc
rather than 4 simple instructions, so write it out using inline asm
instead.
merge of '2813f52a3bcb78c23217d8f1805860bfac4a7d00'
     and '9d5726451d97eeba0dc6cf1f38e95860bc63af32'
Prefer GCC builtin except on ARM, add comment as to why
Joel really was the driver behind Win32 DLLs in general, credit as such