toke.c: Under -DT, report pending idents more clearly

These are treated as forced tokens of type 'p'.  Indicate what the 'p'
means in the debug output.

This:

### 0:LEX_NORMAL/XSTATE "\n;"
### forced token:
### <== 'p'

becomes this:

### 0:LEX_NORMAL/XSTATE "\n;"
### forced token:
### <== 'p' (pending identifier)
Correct three sub call comments in perly.y

NOAMP is only emitted by toke.c when there are no parentheses.  If
there is a parenthesis following a word, the lexer conjures up an '&'
token from nowhere.