remove dead code
refactored to support prepend_path() and prepend_path{}
prepend always have a negative index
moving to TAG_VERSION 5.3.3
repairing PUSHENV
new pushenv gold files
added priority argument to Var member functions
moving to TAG_VERSION 5.3.4
partial support for priority
priority test and tcl2lua support for remove-path
support for tcl prepend/append/remove path with priority
turn off bad_unload, bad_remove_path etc  it is now a no-op
support both ModuleVersion and ModulesVersion