* gdb.texinfo (New Features): mention threads.

	* gdb.texinfo (New Features): mention threads.
	(Summary, C): fix xrefs in newly contributed text.
	(Threads): index entries, clarifications, example
	(passim): minor typos fixed, phrasing improvements

	* remote.texi (Bootstrapping): rephrase text on ^C and add index
	entries; (Server): explain use of gdbserver w/real-time systems,
	add example of conflicting TCP port; (MIPS Remote) break up
	running text into table, highlighting commands, and add example.