Feature Request: restart for SYSTEM-NOT-FOUND

[tsuruxx]

Add a restart that allows using SYSTEM-APROPOS for cases when a user has attempted to load a system using the name of a project instead of the system name i.e "commonqt". For example:

debugger invoked on a QUICKLISP-CLIENT::SYSTEM-NOT-FOUND:
  System "commonqt" not found

Type HELP for debugger help, or (SB-EXT:QUIT) to exit from SBCL.

restarts (invokable by number or by possibly-abbreviated name):
  0: Search for systems similar to "commonqt" instead.
  1: [ABORT] Give up on "commonqt"
  2:         Exit debugger, returning to top level.