add parameter 'logpath'
add logpath and access_mask for master process
exclusion control for error log
remove not used but set variables
fix SEGV(when env is null, neoagent cause SEGV)
adjust space
graceful restart implementation
fix bug(skip table size is incorrect)

taking array size with sizeof and pointer of array is invalid way.
v0.8.0~rc1 released
fix bug(neoagent losts remaing contexts when executing graceful restart)
distingish restart and graceful clearly
v0.8.0~rc2 released
update doc