add new read_chars method, incidentally fix bug in old read_char method#1468

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grahame wants to merge 3 commits intorust-lang:masterfrom

grahame:master

Commits on Jan 7, 2012

add new read_chars method to std::io::reader
Grahame Bowland
committed

Commits on Jan 8, 2012

Merge branch 'master' of http://github.com/graydon/rust
Grahame Bowland
committed
tidy up the new read_chars() method, improve behavior on eof
Grahame Bowland
committed