Update motor to v7.0.6-ESS

Various bugfixes and improvements. For a detailed description see the github page The most important highlights:

• Save and restore
• Power on and never off when JVEL==0
• Can be compiled against latest EPICS base 7.0 branch
• Based on upstream motor R7-2-2
• Fix NTM=1 RTRY=1 bug: Motor stopped, but never moved
• Many improvements in the printing