Spelling corrections, fix syntax error in counter.r, whitespace cleaning...

A laundry list of what should be non-objectionable changes:
* Numerous spelling corrections to crobots.doc and cr-read.me.
* Correction of syntax error in all three copies of counter.r (extra '[' on line 87).
* Removal of dead link to now non-existent order form in both manuals.
* Replacement of tabs from robot code (some are 4 spaces, some are 8 spaces).
* Consistent line endings in HTML files (previously a mix of DOS and Unix).
* Automated removal of trailing whitespace.