Warning! Don't commit parse.cpp and dsql.tab.h, because:
1. I use another YACC version.
2. They must be removed from CVS at all.
Execute STATEMENT also here
Since we already have the define ISC_STATUS_LENGTH for the the length of
the status vector, we should use it! Replaced 'status[20]' with
'status[ISC_STATUS_LENGTH]'.
Replaced the different symbolic names for the maximum length of a path
(MAX_PATH, MAX_PATH_LENGTH, MAXPATHLEN) with one uniq symbol MAXPATHLEN.