[RTEMS Project] #3216: Replace vprintk() implementation

[RTEMS trac]

#3216: Replace vprintk() implementation
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 Reporter:  Sebastian Huber  |      Owner:  Sebastian Huber
     Type:  enhancement      |     Status:  assigned
 Priority:  normal           |  Milestone:  4.12.0
Component:  score            |    Version:  4.12
 Severity:  normal           |   Keywords:
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 The current vprintk() implementation has a questionable licence header,
 lacks support for the 'z' and 'j' format specifiers, is not robust against
 invalid format specifiers, uses a global variable for output.  Replace it
 with a stripped down version of the FreeBSD kernel kvprintf() function.

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Ticket URL: <http://devel.rtems.org/ticket/3216>
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