pcp

First PMDA version that can correctly output event records.

• pcp/src/pmdas/logger/GNUmakefile.in: Updated dependency list.
• pcp/src/pmdas/logger/event.c (event_create): Handles EOF. (event_cleanup): New function.
• pcp/src/pmdas/logger/event.h: Added event_cleanup() declaration.
• pcp/src/pmdas/logger/help: Updated.
• pcp/src/pmdas/logger/logger.c (logger_end_contextCallBack): Calls event_cleanup() when we lose a client. (logger_fetchCallBack): Handles fetching event data properly.
• pcp/src/pmdas/logger/loggerMain.c (loggerMain): Instead of calling select() on the logfile, read it when we get a control message.
• pcp/src/pmdas/logger/pmns: Added logger.event description.