cubicweb-vcsfile #4873158 importing repos has become very slow [validation pending]

too many calls to hglib's log method

prioritynormal
typebug
done in2.0.3
load1.000
load left0.000
closed by#8509da9bfbc3 Avoid calling hg log with a single revision thousands of time
patchAvoid calling hg log with a single revision thousands of time [applied]