Fix requirements, some message outputs, and allow retrieval of PID.
Fix requirements, some message outputs, and allow retrieval of PID.

/multiThread.abstract.class.php:
	* MAIN:::
		-- fix name of the required cs_fileSystem{} class filename
		-- fix name of required cs_globalFunctions{} class filename
		-- fix typo of cs_version{} filename
		-- new private array, $spawnedChildren
	* __construct():
		-- VISIBILITY CHANGE: public (from private)
	* message_handler():
		-- fix some comments
		-- don't pass fourth arg to create_message()
	* create_message():
		-- ARG CHANGE: ARG DELETED: #4 ($addTimestamp=TRUE)
		-- ALL messages will now be given a timestamp
		-- prefix of message uses str_pad() +
		cs_globalFunctions::truncate_string() to make the string mostly
		uniform in length.
	* spawn_child():
		-- add child's pid to the spawnedChildren array.
		-- updated message for parent process.
	* get_myPid() [NEW]:
		-- retrieve value of private $myPid
	* get_parentPid() [NEW]:
		-- retrieve value of private $parentPid

crazedsanity/cs-multiproc,crazedsanity/cs-multiproc