Don't warn about forks while fIsInitialDownload
Add protobuf 2.5.0 download to gitian release process
Qt 4.8.3 r2 in gitian and release process

Also needed to add `unzip` package for the added unzip command for
OpenSSL in the Qt build.
Make settxfee clear that units are btc/kb.
autotools: switch to autotools buildsystem
Merge pull request #2978 from gmaxwell/rpc_settxfee_doc

Make settxfee clear that units are btc/kb.
Bitcoin-Qt: Use qDebug() for printing to debug.log

- removes all usages of PrintDebugStringF from Qt code
- ensure same format for all debug.log messages "functionname : Message"
qt: add vout index to transaction id in transactions details dialog
Merge pull request #2973 from Diapolo/qDebug

Bitcoin-Qt: Use qDebug() for printing to debug.log
Merge pull request #2976 from laanwj/2013_09_txid_details

qt: add vout index to transaction id in transactions details dialog
Merge pull request #2943 from theuni/autotools-final

Autotools buildsystem
configure.ac: remove superfluous bracket

Reported-by: Cory Fields
Merge pull request #2977 from laanwj/2013_09_release_process_protobuf

Add protobuf 2.5.0 download to gitian release process
Merge pull request #2968 from TheBlueMatt/master

Don't warn about forks while fIsInitialDownload
Refactor: CTxMempool class to its own txmempool.{cpp,h}
Send multiple inv messages if mempool.size > MAX_INV_SZ

Changes the response to the 'mempool' command so that if
the memory pool has more than MAX_INV_SZ transactions (50,000)
it will respond with multiple 'inv' messages.
Refactor: CTxMemPool::lookup

lookup now returns a boolean and, if lookup is successful,
a CTransaction. Cuts down on number of lines of code and
potential for error.

It also acquires the CriticalSection itself; I'm working towards
making CTxMemPool better encapsulated.
Refactor: CTxMemPool.fSanityCheck

Encapsulate the sanity-check flag.
Remove mempool locktime support for obsolete 0.1.5 clients
Refactor: move GetValueIn(tx) to tx.GetValueIn()

GetValueIn makes more sense as a CTransaction member.