Fri, 10 Mar 2006 22:24:19 -0800 fix broken environment save/restore when a hook runs.
Vadim Gelfer <vadim.gelfer@gmail.com> [Fri, 10 Mar 2006 22:24:19 -0800] rev 1880
fix broken environment save/restore when a hook runs. move "run commend with different env/cwd" code out to function in util. new function is called esystem.
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