amendment to r1091

git-svn-id: http://tesseract-ocr.googlecode.com/svn/trunk@1095 d0cd1f9f-072b-0410-8dd7-cf729c803f20
skip imagedata build to fix issue 1150 on Mac OS X

git-svn-id: http://tesseract-ocr.googlecode.com/svn/trunk@1096 d0cd1f9f-072b-0410-8dd7-cf729c803f20