removed to function prototypes enlargewind() shrinkwind () that we no longer implement
Removed ^X^R Read File - not very useful
Removed ^X^I Insert File - rarely use, can do other ways
Added a view mode indicated by % on the modeline
Added ^X^Q togglereadonly (ie toggle view mode on/off)
Added ^X^V View File - loads file and switches to view-mode
changed all TTbeep() to (*term_t.beep)();
Cosmetic changes to some of the message prompts
pEmacs V1.02, 21 Feb 2013
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1) Added filename completion for ^X^F and ^X^R
2) Add entry in extendedcommand for the DEL key
  - note this may not work on all keyboards