[Bug 616] Release the .omakedb lock when polling for filesystem changes.
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Changes:
+126 -95 omake-branches/0.9.8.x/src/build/omake_build.ml
A hyperlinked version of this commit is available at
http://svn.metaprl.org/commitlogs/omake/2007-04.html#07/04/20.14:33:12