add a bunch of key-related fixes: put Meta-( (Meta-9), Meta-) (Meta-0),

add a bunch of key-related fixes: put Meta-( (Meta-9), Meta-) (Meta-0),
and Meta-J back in the shortcut list since Meta-G is used in the file
browser and not as a toggle, tweak nanogetstr() and statusq() so that
resetstatuspos can be reduced to a static bool, change the names of some
keys to be more consistent, and add the ^R^X^X and ^W^T^T shortcuts
(note that the latter doesn't preserve the contents of the statusbar yet
when ^T is pressed at the "Go To Line" prompt), and add a few other
miscellaneous tweaks

git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@1954 35c25a1d-7b9e-4130-9fde-d3aeb78583b8