Make configuration parsing for IconWidth/Height somewhat easier and

more robust. Previously, the IconWidth/IconHeight directives were
not checked correctly (e.g., IconWidthFailsToDetectThis=10 would
be parsed as a legal IconWidth=10 option). Also, copying the argument and
parsing it with ap_getword() seems to be a waste of computing time.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@81968 13f79535-47bb-0310-9956-ffa450edef68