Fix new strfuncs back up (again) - No, incrementing pointers in a loop is

Fix new strfuncs back up (again) - No, incrementing pointers in a loop is

Fix new strfuncs back up (again)
	- No, incrementing pointers in a loop is not any faster than
	  indexing an array in a loop with a good compiler, but it is
	  harder to read.
	- strconcat doesn't allow a separator - added g_str_array_join,
	  renamed g_str_array_join to g_str_array_joinv
	- join routines take separator as first argument, as is customary.