attempt to trace x15
Revert "attempt to trace x15"

This reverts commit 44a5b3af6c9794de8483b770f499cfeafd9f472f.
Add Pentablake algo
Minimal getblocktemplate support

Backport from cpuminer 2.4, commit 30fae0c342b12
cpu-miner: spaces to tabs
cpu-miner: reduce diff with pooler/cpuminer

to be able to cherry pick remaining v2.4 changes
getblocktemplate: submit/coinbase
getblocktemplate: long polling
getblocktemplate: version/force, version/reduce
Avoid fetching too much work when LP is off
Add option --coinbase-sig
Enhance startup error messages
Allow loading multiple configuration files
Do not use the non-standard typeof operator
Hide passwords on the command line

Closes #76
Switch to getwork if no payout address is provided
util: rpc2 code cleanup (untested)
output: add the --color parameter (-C)

disabled by default or if syslog option is set

Signed-off-by: Tanguy Pruvot <tanguy.pruvot@gmail.com>
cpuminer: show credits (version and program name)
shabal: disable usuned code