BFGMiner 3.1.0 released

[Luke-Jr]

NEW VERSION 3.1.0, JUNE 13 2013

This release includes numerous merges of contributions by Con & Kano, from 
cgminer 2.11.0 through 3.2.1. Major merges are noted in the human readable 
changelog with "cg". Notable exclusions are the libusb rewrites (overall a bad 
idea), "hotplug" support (not implemented correctly), and "cURL-less" stratum 
(breaks proxy support, and the underlying bugs they hoped to workaround with 
it are already fixed in BFGMiner). BFGMiner also continues to use the 
original, time-tested driver for Butterfly Labs devices, including ASICs, and 
does not include cgminer's ASIC-specific rewritten "BFLSC" driver in any form.

Additionally, there have been many internal code cleanups. Please note that as 
uthash is now available for most operating systems, it is no longer bundled 
with BFGMiner. You will need to install the uthash-dev package to compile 
BFGMiner 3.1+.

Human readable changelog:
- BitForce: Support for new long-board job-per-chip protocol.
- Reformatted TUI summaries, including percentage of shares rejected or stale.
- Icarus-compatible devices: Autodetect work_division by default (eg, for
  Block Erupter USB ASICs).
- Avalon: Driver is now compiled in by default, including in official binaries
- Avalon: Will only configure with specific -S avalon:/dev/ttyUSBn option
  (note the driver name must be included), since there is no reliable probe
  for it.
- Avalon: Full data for 4-module devices in RPC. cg
- OpenCL: Support for reading temperature from free software radeon drivers
  via libsensors.
- Fixes for writing configuration files when --device and/or --remove-disabled
  are specified.
- Faster startup now when pools are slow, connecting to the first pool
  available! cg
- Adding a pool now from the menu will return quickly while it leaves probing
  it to the background. cg
- Scrypt: Fixed the failure to create high thread concurrencies. cg
- Scrypt: Intensities above 13 will not lead to garbage being generated on GCN
  (7xxx) hardware now. cg
- Scrypt: Decreased default GPU threads to 1. Intensities above 13 cannot
  handle more. cg
- Scrypt: Changed the default choice of thread concurrency if no options are
  passed as a hint, based on amount of available GPU RAM. cg
- Scrypt: Extensive updates to the SCRYPT-README file in line with changes to
  the code and new information. cg
- Scrypt: Slightly larger buffer which may lead to less hardware errors on
  very fast GPUs. cg
- CPU mining: Numerous improvements to portability. Should also work on
  Windows now, at least.

Full changelog: https://bitcointalk.org/?topic=168174.msg2464103#msg2464103

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