Merge pull request #66 from XChinux/master

replace fprintf(stderr,.......) to std::cerr << xxxx
Merge pull request #67 from XChinux/master

change TcFunctionalSortFilterProxyModelPrivate constructor function's member initialize order
Merge branch 'master' of github.com:/XChinux/xchinux_tianchi
Merge remote-tracking branch 'upstream/master'
add two functions to TcExcelReader's :
  cell(QString colName, int rowIndex)
  cell(QString cellName)