Fixed bugs in scanutils that were causing accuracy degradation

git-svn-id: http://tesseract-ocr.googlecode.com/svn/trunk@1084 d0cd1f9f-072b-0410-8dd7-cf729c803f20
Fixed some clang errors about explicit constructors and more formatting.

git-svn-id: http://tesseract-ocr.googlecode.com/svn/trunk@1085 d0cd1f9f-072b-0410-8dd7-cf729c803f20
Fixed segfault due to partial support of * modifier in tfscanf

git-svn-id: http://tesseract-ocr.googlecode.com/svn/trunk@1086 d0cd1f9f-072b-0410-8dd7-cf729c803f20
Fixed tfscanf return value with * modifier

git-svn-id: http://tesseract-ocr.googlecode.com/svn/trunk@1087 d0cd1f9f-072b-0410-8dd7-cf729c803f20