pgsql-server: Make pltcl work on Win32.

Log Message:
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Make pltcl work on Win32. Magnus Hagander

Modified Files:
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pgsql-server/src/include/nodes:
nodes.h (r1.160 -> r1.161)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/include/nodes/nodes.h.diff?r1=1.160&r2=1.161)
pgsql-server/src/pl/tcl:
Makefile (r1.42 -> r1.43)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/pl/tcl/Makefile.diff?r1=1.42&r2=1.43)
pltcl.c (r1.92 -> r1.93)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/pl/tcl/pltcl.c.diff?r1=1.92&r2=1.93)