This patch was generated using clang-tidy:
clang-tidy -checks="-*,google-readability-namespace-comments" -fix
Switch to the format used by clang-tidy to allow easy, automatic,
tool-based maintenance / checking of the comments.
This also found a few instances of comments that were out of sync.
Use "using std::foo" to make the actual code itself a lot more readable.
There are some exceptions where we usually cannot do this, e.g. std::thread
often conflicts with "thread" from Qt or Boost.
The formatting depending on the distance between two timestamps is
reintroduced with the responding function residing in the 'Ruler' class
(the prime user of that function).
Fixes a rounding bug for the least significant digit in the
'format_time_minutes()' function.
The 'Cursor' and 'CursorPair' classes now use the same precision when
formatting timestamps as the rest of the program.
Uwe Hermann
Gerhard Sittig
Soeren Apel
Jens Steinhauser