BLXV (8.36) Improved logging in ScannableBase:checkPositionLength()

The exception now reports the name of the scannable which failed the check.
GDA (8.34) Fix racecondition in metadata scannable in atScanEnd() that can cause metadata not to be written during very short/quick scans
Merge remote branch 'auto+dls_sw+i15+software+gda_versions+gda_8.36a+workspace_git/8.36' into 8.36