Updated xnudmesg submodule

Signed-off-by: Jeremy C. Andrus <jeremya@cs.columbia.edu>
updated C syntax highlighting

Signed-off-by: Jeremy C. Andrus <jeremya@cs.columbia.edu>
Add a couple words to spelling dictionary

Signed-off-by: Jeremy C. Andrus <jeremya@cs.columbia.edu>
Added GrepSyscall function and better default grep args

GrepSyscall will look for Linux kernel style system call definitions.

See inline for updated grep options and help text.

Signed-off-by: Jeremy C. Andrus <jeremya@cs.columbia.edu>
updated keybindings

Signed-off-by: Jeremy C. Andrus <jeremya@cs.columbia.edu>
fugitive bindings

Signed-off-by: Jeremy C. Andrus <jeremya@cs.columbia.edu>