Merged revisions 8749 via svnmerge from
https://matplotlib.svn.sf.net/svnroot/matplotlib/branches/v1_0_maint
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r8749 | mdboom | 2010-10-12 15:13:09 -0400 (Tue, 12 Oct 2010) | 2 lines
Safer handling of the minimum positive value in log locators.
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