(Debugging Output): Document "set/show debug

	(Debugging Output): Document "set/show debug
	solib-frv".  Fix "set/show debugvarobj".
	(Set Breaks): Add index entry for "hardware breakpoints".
	(Renesas ICE): Document "e7000", "ftplogin", "ftpload", "drain",
	and "set/show usehardbreakpoints".
	(MIPS Embedded): Document "se/show syn-garbage-limit", "set/show
	monitor-prompt", "set/show monitor-warnings", "pmon".
	(ARM): Document "rdilogfile", "rdilogenable", "set/show
	rdiromatzero", "set/show rdiheartbeat".
	(PowerPC): Document SDS-specific commands "set/show sdstimeout",
	"sds".
	(Embedded Processors): Document the "sim" command.
	(Remote): Document the "remote" command.
	(DJGPP Native): Document the "info serial" command.
	(Threads): Document "maint info sol-threads".
	(Files): Document "nosharedlibrary", "add-symbol-file-from-memory".
	(Set Breaks): Improve indexing.
	(Command Syntax): Add a reference to dont-repeat.
	(Define): Document "dont-repeat".
	(TUI Commands): Document "tabset".
	(WinCE): New subsection.  Document "set/show remotedirectory",
	"set/show remoteupload", "set/show remoteaddhost".