Updated 'sccp reload' to make sure all parameters are checked and verified before flushing glob(cfg). SCCP COMMAND CHANGE: 'sccp reload [filename]' has been replaced by 'sccp reload file filename'

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5335 43c1dc8c-776e-4df2-8ef1-6e829299be21