Keep information about all block files in memory
Parameterise command line option defaults, so translations are independent of them
build: quit abusing LIBS for Windows builds.

Similar to the INCLUDES changes in 6b099402b40, split out LIBS into individual
entries for more fine-grained control.

Also add MINIUPNPC_LIBS which was missing before, and hook it up to
executables.
Bugfix: Remove default from -zapwallettxes description (inaccurate)
build: fix libtool's refusal to link static libs into a dll
Squashed 'src/leveldb/' changes from 7924331..7d41e6f

7d41e6f Merge upstream LevelDB 1.18
803d692 Release 1.18

git-subtree-dir: src/leveldb
git-subtree-split: 7d41e6f89ff04ce9e6a742932924796f69c6e23d
Merge src/leveldb changes for LevelDB 1.18.
Add a SECURE style flag for ThreadSafeMessageBox, which indicates that the message contains sensitive information. This keeps the message from being output to the debug log by bitcoind. Fixes a possible security risk when starting bitcoind in server mode without the 'rpcpassword' option configured, resulting in the "suggested" password being output to the debug log.
Add buildenv.py to gitignore
script: move CScriptID to standard.h and add a ctor for creating them from CScripts

This allows for a reversal of the current behavior.

This:
CScript foo;
CScriptID bar(foo.GetID());

Becomes:
CScript foo;
CScriptID bar(foo);

This way, CScript is no longer dependent on CScriptID or Hash();
script: add ToByteVector() for converting anything with begin/end

This should move to a util header once their dependencies are cleaned up.
script: move ToString and ValueString out of the header
script: add a slew of includes all around and drop includes from script.h

Lots of files ended up with indirect includes from script.h.
Merge pull request #5095

d4746d5 Add a SECURE style flag for ThreadSafeMessageBox, which indicates that the message contains sensitive information. This keeps the message from being output to the debug log by bitcoind. Fixes a possible security risk when starting bitcoind in server mode without the 'rpcpassword' option configured, resulting in the "suggested" password being output to the debug log. (Mark Friedenbach)
Add IsNull() to class CAutoFile and remove operator !
Rename CWalletInterface to CValidationInterface

It's useful for much more than wallets.
Chain::SetTip return type to void
Fixes for missing boost tuple.hpp header include.
Add CValidationInterface::BlockChecked notification
Bugfix: submitblock: Use a temporary CValidationState to determine accurately the outcome of ProcessBlock, now that it no longer does the full block validity check