FEATURE: Split error and request logs.

Add tags to mprLog, mprError
Rename mprTrace to mprDebug
CLEAN: after error log upgrade
FIX: mprRawLog in mprSsl
FIX: comp warnings
FIX: compiler warnings
FIX: compiler warnings
FIX: remove mprError
FIX: vxworks writeToOs
FIX: re-enable mprSetCmdlineLogging
UPGRADE: osdep.h windows errno definitions
FIX: add timestamps to log file
FIX: error message format by default
UPGRADE: osdep with EPROTO fix
CLEAN: remove old debug trace
FIX: removeFiles building on all platforms
FIX: encoding of JSON strings with embedded newline or carriage-return.
REFACTOR: formatting of log file messages.
FIX: log handler in manager
CLEAN: remove old trace
REFACTOR: mprLog and messages