pgexternaltable - src: modify make file and *.h file to compile by

Log Message:
-----------
modify make file and *.h file to compile by gcc-4.3

Modified Files:
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src/externaltable/createexttab:
Makefile (r1.4 -> r1.5)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgexternaltable/src/externaltable/createexttab/Makefile?r1=1.4&r2=1.5)
config.h (r1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgexternaltable/src/externaltable/createexttab/config.h?r1=1.1&r2=1.2)
tableOperator.h (r1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgexternaltable/src/externaltable/createexttab/tableOperator.h?r1=1.1&r2=1.2)