iconvdata regression

[David Miller]

This commit:

commit e64d2de526d8cfa2908e08892a534316a0bddf5f
Author: Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>
Date:   Fri Mar 30 10:43:43 2012 +0200

    Fix a bug when converting strings with 1 character using TCVN5712-1
    
    It isn't necessary to buffer the last character of strings. This can cause a
    bug with strings that have 1 character between 0x0041 and 0x01b0.
    
    	[BZ #13691]
    	* iconvdata/tcvn5712-1.c (FROM_LOOP): Fix a bug when converting strings
    	with only 1 character between 0x0041 and 0x01b0.
    	* wcsmbs/Makefile (tests): Add tst-mbsnrtowcs.
    	* wcsmbs/tst-mbsnrtowcs.c: New file.

caused run-iconvtest.sh to start failing on Sparc, specifically:

   test data: TCVN-5712 -> UTF8 OK/FAILED

Please fix this or revert your change, thanks.