Fix #1603 - Sj is an alias for iSj.

- Fix a typo in the 'wt' command
Fix previous 'wt' commit and disable #! in sandbox mode (Fix #1604)
Add pwd usage
Fix pf
Improve linked list display in pf
Add pfs to print struct size
Initial implementation of the & command. Bump capstone
Add missing file
More fixes for the &Task command
Simplify code to fix COV 1250448
Fix COV#1250308 and COV#1250307