Fix searchsorted for Ranges
Export Reverse in Base.Order
More robust solution for unused control characters

This is a better fix for #6682 - all control characters are now set to be ignored in the escape_defaults keymap. I had previously missed a few (e.g., `^]`, `^-`, `^\`) in both the search and default keymaps. This should fully prevent control characters from getting inserted by typing at the REPL (although they can still get inserted via paste).
Merge pull request #6780 from wsliang/reverse

Export Reverse in Base.Order
Merge pull request #6783 from mbauman/more-unused-bindings

More robust solution for unused control characters
fix #6784
fix codegen bug in static_void_instance on Type{()}
faster copy() for ObjectIdDict
avoid duplicate entries in linfo->tfunc (type inference efficiency issue)
Merge pull request #6776 from wsliang/searchsorted

Fix searchsorted for Ranges
more efficient setindex for sparsematrix