add cstdlib header for drand48, remove trailing blanks
git-svn-id: http://qboxcode.org/svn/qb/trunk@1821 cba15fb0-1239-40c8-b417-11db7ca47a34
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git-svn-id: http://qboxcode.org/svn/qb/trunk@1821 cba15fb0-1239-40c8-b417-11db7ca47a34