Syntax parse sensitive to brace mismatches in write and comments

[wrayre]

Parse errors are generated when there is brace mismatch that occurs within a write statement or a comment.

Example: The following valid Soar production generates a parse error in the editor (but not in Soar 9.6.4) due to the single parentheses within the write string:

sp {monitor*game-over*duplicate-move
         (state <s> ^io.input-link.observation <obs>)
         (<obs> ^black-pegs -1)
         -->
         (write (crlf) |[AGENT] Duplicate move detected... Game over :(    |)
}

A similar issue arises when comments within a rule introduce a parenthesis or brace mismatch:

# Another parse issue
sp {monitor*game-over*duplicate-move
         (state <s> ^io.input-link.observation <obs>)
#                         ^an-old-test-no-longer-needed)
         (<obs> ^black-pegs -1)
         -->
         (write (crlf) |[AGENT] Duplicate move detected... Game over ....   |)
}