[Omake] SVN Commit: OMake Build System [0.9.8.x] (Rev. 10848)

[Jason J. Hickey]

Preserve the venv during shell calls.  This fixes the problem with
Shell.cd not having any effect.

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Changes:
    +1 -1	omake-branches/0.9.8.x/src/build/omake_rule.ml
    +2 -3	omake-branches/0.9.8.x/src/builtin/omake_builtin_base.ml
    +6 -0	omake-branches/0.9.8.x/src/eval/omake_eval.ml
    +4 -4	omake-branches/0.9.8.x/src/shell/omake_shell_job.ml
 
A hyperlinked version of this commit is available at
http://svn.metaprl.org/commitlogs/omake/2007-05.html#07/05/31.15:23:57