Get rid of some warnings on Solaris 8 by using APR's ctype macros:

logresolve.c: In function `main':
logresolve.c:327: warning: subscript has type `char'
ab.c: In function `main':
ab.c:1074: warning: subscript has type `char'
ab.c:1087: warning: subscript has type `char'


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@86793 13f79535-47bb-0310-9956-ffa450edef68