[Ada] Change spelling parametrize(d) => parameterize(d)

[Arnaud Charlet <charlet at adacore dot com>]

This patch changes the spelling of parameterize(d) to the more usual
American spelling with an E. This also matches the RM and AI usage.
Generally this has no effect, except in error messages as shown by
this example, compiled with -gnatld7 -gnat2012:

     1. package parameterize is
     2.    function F return integer is 3;
                                        |
        >>> parameterized expression must be enclosed in parentheses

     3. end;

Tested on x86_64-pc-linux-gnu, committed on trunk

2010-10-07  Robert Dewar  <dewar@adacore.com>

	* gnat_rm.texi, exp_util.adb, sinfo.adb, sinfo.ads, sem_ch12.adb,
	sem.adb, gnat_ugn.texi, sem_util.ads, par-ch6.adb, targparm.ads,
	restrict.adb, sem_ch6.adb, sem_ch6.ads, sprint.adb, i-c.ads: Change
	spelling parametrize(d) => parameterize(d).

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