Win32 build: Tweak webkit.pc prefix path to match the installation.

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@20590 57a11ea4-9604-0410-9ed3-97b8803252fd

packaging/win32/install-impl.sh

@@ -1348,6 +1348,10 @@ function inst_webkit() {
 	fi
         quiet ${PKG_CONFIG} --exists webkit-1.0 || die "webkit not installed correctly"
 	rm -rf ${TMP_UDIR}/webkit-*
+
+        qpushd $_WEBKIT_UDIR/lib/pkgconfig
+            perl -pi.bak -e"s!^prefix=.*\$!prefix=$_WEBKIT_UDIR!" *.pc
+        qpopd
     fi
 }