Blocked revisions 76738 via svnmerge

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  r76738 | ronald.oussoren | 2009-12-10 04:27:09 -0600 (Thu, 10 Dec 2009) | 6 lines

  Fix an issue with the detection of a non-existing SDK
  on OSX. Without this patch it wasn't possible after all
  to compile extensions on OSX 10.6 with the binary
  installer unless the user had installed the (non-default)
  10.4u SDK.
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