Latest xml patch breaks some of the buildfarm

Some but not all buildfarm members are showing unexpected xml regression
test output:

*** ./expected/xml.out Fri Nov 9 11:44:01 2007
--- ./results/xml.out Fri Nov 9 12:54:10 2007
***************
*** 184,189 ****
--- 184,191 ----
ERROR: invalid XML processing instruction
DETAIL: XML processing instruction target name cannot be "xml".
SELECT xmlpi(name xmlstuff);
+ WARNING: could not parse XML declaration in stored value
+ DETAIL: Space required
xmlpi
--------------
<?xmlstuff?>
***************
*** 214,219 ****
--- 216,223 ----
(1 row)

SELECT xmlpi(name "xml-stylesheet", 'href="mystyle.css" type="text/css"');
+ WARNING: could not parse XML declaration in stored value
+ DETAIL: Space required
xmlpi
-------------------------------------------------------
<?xml-stylesheet href="mystyle.css" type="text/css"?>

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regards, tom lane