Updated Chinese Simp translation #281

When rescanning, if the scanned transaction is already in the wallet, it
is skipped. However, if someone sends a transaction, does not wait for
confirmation, switches wallets, waits for a block that contains his original
transaction, and switches wallets again, a rescan will leave his wallet
transaction (which has no merkle branch, so no confirmations) untouched.

With the separation of CENT and MIN_TX_FEE, it is now reasonable
to create change outputs between 0.01 and 0.0005, as these are
spendable according to the policy, even though they require a fee
to be paid.

Also, when enough fee was already present, everything can go into
a change output, without further increasing the fee.

For instance any nBits compressed value from 0x1a44b800 thru
0x1a44b9ff will show as difficulty 244139.4816. This patch will
more accurately convert the nBits compressed values to the double
difficulty.

This will display any of the recent difficulty levels slightly
differently though. Early difficulties and testnet difficulties are
not large enough to trigger this bug.

None of the actual targets or compressed targets are changed, only
the conversion to the floating point difficulty is changed and afaik
it is only ever displayed, never converted back so the patch does not
effect the target calculations, binary files, databases nor the binary
protocol.

Update to openssl-1.0.0d and enable RPC-SSL on Win32

Fix rfc1918 and rfc3927 compliance for ignoring non-internet-routable hosts

Update transactions already in the wallet when rescanning.

Add common temp files to .gitignore.

Fix for small change outputs

Demystify a few magic numbers.

create keypool in LoadWallet()