Tiny bitcoin library, with lightweight client and utils

libccoin library dependencies:
	GLib 2.x (from the GTK project)
	OpenSSL

picocoin client dependencies:
	GLib 2.x (from the GTK project)
	OpenSSL
	libevent 2.x
	jansson 2.x (2.1 used for development)

block relay daemon (brd) dependencies:
	GLib 2.x (from the GTK project)
	OpenSSL
	libevent 2.x



Command line and configuration file usage
=========================================

In general, the program stores settings in a key/value map.  These key=value
parameters may be specified on the command line, or in a configuration file.

The command line is processed in-order.  For example

	$ ./picocoin value=1 list-settings value=2 list-settings

will execute the "list-settings" command twice, each with "value" setting
initialized to a different parameter.

Similarly, you may read multiple configuration files into the settings map:

	$ ./picocoin config=file1 config=file2 config=file3


Recognized parameters
=====================

addnode
------------------
Format: address SPACE port

Manually add P2P node to peer manager.


config (alias "c")
------------------
Specify a pathname to the configuration file.


wallet (alias "w")
------------------
Specify a pathname to the wallet data file.  Default "picocoin.wallet"

AES encryption is applied to the wallet.  Passphrase is specified via
environment variable PICOCOIN_PASSPHRASE.


debug
------------------
Enable additional debug output.

net.connect.timeout
------------------
TCP connect(2) timeout.


Recognized commands
===================

chain-set
---------
Select blockchain and network.  Reads the "chain" settings variable.
Acceptable values are "chain=bitcoin" and "chain=testnet3".  Updates
internal parameters (pchMessageStart / network magic, genesis block, ...)

dns-seeds
---------
Query and display bitcoin DNS seeds, for P2P node addresses.

help
----
Output these commands and recognized settings.

list-settings
-------------
Display settings map.

new-address
-----------
Generate a new bitcoin address (ECDSA keypair).  Store it in the current
wallet, 

new-wallet
----------
Initialize a new wallet.  Refuses to initialize, if the filename already
exists.

netsync
-------
Synchronize with network: send any pending payments, and check for
new incoming payments.

wallet-addr
-----------
List all bitcoin addresses in wallet.

wallet-dump
-----------
Dump entire wallet contents, including all private keys.

wallet-info
-----------
Informational summary of wallet data.