When handling default arguments for the configure script(s), give prefernce to those that the user puts on the command line when running this script.  In other words, allow the user to override default settings using the normal command-line arguments.
When handling default arguments for the configure script(s), give
prefernce to those that the user puts on the command line when running
this script.  In other words, allow the user to override default settings
using the normal command-line arguments.


git-svn-id: 769d22dfa2d22aad706b9a451492fb87c0735f19@9379 08b38cba-cd3b-11de-854e-f91c5b6e4272

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