[Bug #2602] version.h should be end with newline

Bug #2602: version.h should be end with newline.
http://redmine.ruby-lang.org/issues/show/2602

e$B5/I<<Te(B: Takahiro K.
e$B%9%F!<%?%9e(B: Open, e$BM%@hEYe(B: Low
e$B%+%F%4%je(B: build
ruby -v: ruby 1.8.7 (2010-01-10 patchlevel 249) [i486-netbsdelf]

Ruby 1.8.7 patchlevel 249
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e$B%&%)!<%K%s%0$,I=<($5$l$^$9!#e(B

cc -O2 -pthread -I/usr/include -fPIC -pipe -DRUBY_EXPORT -I. -I.
-I/usr/include -c version.c
In file included from version.c:14:
version.h:29:41: warning: no newline at end of file

version.he$B$,2~9T$G=$o$C$F$$$J$$$3$H$,860x$G$9$N$G!"<!$N%j%j!<%9$K$O2~9T$Ge(B
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e$B%A%1%C%He(B #2602 e$B$,99?7$5$l$^$7$?!#e(B (by Yui NARUSE)

e$B%9%F!<%?%9e(B Opene$B$+$ie(BClosede$B$KJQ99e(B

version.h e$B99?7e(B hook e$B$NJ}$GBP1~$7$F$/$@$5$C$?$=$&$G$9e(B

http://redmine.ruby-lang.org/issues/show/2602