added method to get table headers to uiadll
Table#headers
can get values from a table in uiadll
added method to clean up string arrays returned from uiadll
UiaDll#strings_from -> class method
favor rspec let in table spec
Table#values
Table_GetValues includes ListItem controls as well in uiadll
refactored Table#strings to use new uiadll string methods
DRY up some string copying
remove #headers and #values from the Table api
Merge branch 'Table#strings' of git://github.com/leviwilson/RAutomation into leviwilson-Table#strings

Conflicts:
	ext/UiaDll/Release/UiaDll.dll