[COMMITTERS] pgsql: Fix unportable uses of functions.

[Tom Lane]

Log Message:
-----------
Fix unportable uses of <ctype.h> functions.  Per Sergey Koposov.

Modified Files:
--------------
    pgsql/src/backend/commands:
        copy.c (r1.248 -> r1.249)
        
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/commands/copy.c.diff?r1=1.248&r2=1.249)

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