Potential way to fix the problem with cross compatibility.

The use of the #if statements could work
Merge pull request #36 from SbSpider/networking

Potential way to fix the problem with cross compatibility.
update bitcloud.org
Update Makefile
Update bitcloud.h
Update main.c
Fixed typo: s/hark/hard/
Merge pull request #39 from elimisteve/patch-1

Fixed typo: s/hark/hard/
Update nodepool.sql

Added extra fields to permissions and logs
Merge pull request #40 from beanlovin/patch-1

Update nodepool.sql
better introduction of bitcloud.org and mining CA
Merge pull request #38 from wangchuan3533/master

some compile error or warnnings
Update bitcloud.org