Removed cmAudioSys.c dependency on cmDspValue.h by changing the
host to audio system message format from cmDspUiHdr_t to cmAudioSysMstr_t.
All audio system message records are now isolated in cmAudioSysMsg.h
which cmMsgProtocol directly includes.

Updated cmMpInitialize() and cmMpTest() to use cmCtx_t.
Added following public functions:
cmMpDeviceNameToIndex()
cmMpDevicePortNameToIndex()

cmMpParserMidiTriple() and cmMpParserTransmit() to allow the MIDI parser
to transmit pre-parsed MIDI messages.

links prior to checking for files or dir's because a link may be
identified as file or directory.

cmDspCtx.h, cmDspNet.h/c, cmDspSys.c, Makefile.am: Added cmDspStore.

Added kReturnUnknownLexFl configuration flag.  If this flag is set
tokens which are not recognized will be returned with the
token id set to kUnknownLexTId.  This is useful for returning all text.

Added kUserDefPriorityLexFl configuration flag.  User defined tokens
take priority even if an identifier (kIdentLexTId) has a longer match.

Added cmLexEnableToken().  This function allows tokens recognizers to be
enabled and disabled.

Parameter type flags (cmBoolPoFl, ...) are now private.
Added 'Flag' parameter type.
Added Enum master help string.
Improved built-in help text content and formatting.
cmHexPoFl is now a parameter configuration flag rather than a type.

Added kRecurseLInksFsFl and kLinkFsFl.
Changed stat() to lstat() in _cmFileSysIsLink().
Added _cmFileSysIsSocket()