[xml] xmllint --noblanks will not strip ignoreable whitespaces

[Christian Glahn <christian glahn uibk ac at>]

hi,

i found this problem with libxml2 2.4.21 and did not try if it was introduced
with older versions:

when calling xmllint --noblanks it will not strip ignoreable whitespaces.

if seems "xmlKeepBlanksDefaultValue" is simply ignored on any parsing 
process, since either setting this variable directly or by using 
xmlKeepBlanksDefault(). 

christian