Log Message:
-----------
Handle case where pgxs (Makefile.global) does not define FLEX or YACC
variables. (bug 1009435)
Modified Files:
--------------
orafce:
Makefile (r1.19 -> r1.20)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/orafce/orafce/Makefile.diff?r1=1.19&r2=1.20)