hg: build-infra/jdk7: One too many misspellings of the freetype directory.

[fredrik.ohrstrom at oracle.com]

Changeset: 74d77f3637f0
Author:    ohrstrom
Date:      2011-10-24 16:06 +0200
URL:       http://hg.openjdk.java.net/build-infra/jdk7/rev/74d77f3637f0

One too many misspellings of the freetype directory.
Added test that detect bad --with-freetype=.... already
in configure instead of having to wait for a looong build to detect the problem.
More cl.exe specific flags.

! common/config/platform.m4
! configure
! configure.ac