Added scaffolding for velocity mode

Added records to support detection of the current operation mode
(position or velocity), whether one is allowed to change between the two
and a record to actually change between the two. Also added a
doMoveVelocity method which should be implemented by derived drivers if
they support velocity mode.

.gitignore

@@ -0,0 +1,125 @@
+# Took these from the https://github.com/github/gitignore project on October 21, 2011
+
+# **** 'Personal' entries don't belong in here - put them in your .git/info/exclude file ****
+
+# Ignore text editor (e.g. emacs) autosave files
+*~
+
+# Build Artifacts
+O.*_Common/
+O.*_RHEL8-x86_64/
+
+# Compiled Object files
+*.slo
+*.lo
+*.o
+*.obj
+*.d
+SICServer*
+
+# Compiled Dynamic libraries
+*.so
+
+# Compiled Static libraries
+*.lai
+*.la
+*.a
+
+# Compiled python files
+*.py[co]
+
+# Eclipse-generated files
+*.pydevproject
+.project
+.metadata
+bin/**
+tmp/**
+tmp/**/*
+*.tmp
+*.bak
+*.swp
+*~.nib
+local.properties
+.classpath
+.settings/
+.loadpath
+
+# External tool builders
+.externalToolBuilders/
+
+# Locally stored "Eclipse launch configurations"
+*.launch
+
+# CDT-specific
+.cproject
+
+# PDT-specific
+.buildpath
+
+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+*.sln
+*.vcproj
+*.exe
+*.vcxproj
+*.filters
+
+# User-specific files
+*.suo
+*.user
+*.sln.docstates
+*.sdf
+.cvsignore
+
+#Test results
+*.log
+
+# Build results
+[Dd]ebug/
+[Rr]elease/
+*_i.c
+*_p.c
+*.ilk
+*.meta
+*.obj
+*.pch
+*.pdb
+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.vspscc
+.builds
+
+
+# Visual C++ cache files
+ipch/
+*.aps
+*.ncb
+*.opensdf
+*.sdf
+
+# Visual Studio profiler
+*.psess
+*.vsp
+
+# ReSharper is a .NET coding add-in
+_ReSharper*
+
+
+
+# Others
+*.autosave
+
+
+# Windows image file caches
+Thumbs.db
+
+
+# Mac OS X Finder
+.DS_Store
+._*