Dumpers: Fix standard types (C++11) for old gcc

Change-Id: Ic208a45f6d0c7419d83dccd78b552c734421c953
Reviewed-by: hjk <hjk121@nokiamail.com>
debugger: Fix Qt4 QFile dumper

Change-Id: Ifd2caaef4d0c286f2855175acb2dc1b835213c37
Reviewed-by: hjk <hjk121@nokiamail.com>
debugger: Fix QDir dumper for Qt4 64bit

Also make the structure more self-explained

Change-Id: Ia5080f4e07e2a8b7c6b18e1353a4cf1cf3488361
Reviewed-by: hjk <hjk121@nokiamail.com>