[Bug #1175] File.expand_path("~user") dose not work

Bug #1175: File.expand_path(“~user”) dose not work
http://redmine.ruby-lang.org/issues/show/1175

e$B5/I<<Te(B: Tomoyuki C.
e$B%9%F!<%?%9e(B: Open, e$BM%@hEYe(B: Normal
e$B%+%F%4%je(B: core, Target version: 1.9.2
ruby -v: ruby 1.9.2dev (2009-02-19 trunk 22427) [i686-linux]

File.expand_path e$B$,e(B “~user”
e$B$N$h$&$JFCDj%f!<%6$N%[!<%%G%#%l%/%H%j;XDj$r4^$e(B
e$B%Q%9$rE83+$7$J$/$J$C$F$$$k$h$&$G$9!#e(B

% ruby-trunk -v -e ‘p File.expand_path(“~user”)’
ruby 1.9.2dev (2009-02-19 trunk 22427) [i686-linux]
“~user”

HAVE_GETPWENT e$B$,Dj5A$5$l$F$$$J$$$H$$$1$J$$$N$Ke(B configure.in
e$B$N%A%'%C%/BP>]4X?t$K4^$^$l$F$$$J$$$?$a$N$h$&$G$9!#e(B

e$B%A%1%C%He(B #1175 e$B$,99?7$5$l$^$7$?!#e(B (by Nobuyoshi N.)

e$B%9%F!<%?%9e(B Opene$B$+$ie(BClosede$B$KJQ99e(B
e$B?JD=e(B % 0e$B$+$ie(B100e$B$KJQ99e(B

Applied in changeset r22428.

http://redmine.ruby-lang.org/issues/show/1175