disable the $PATH search for the PKG_CONFIG tool.  it isn't needed and just
gets in the way when setting to a value that might not yet exist.

disable the existence test for the PKG_CONFIG_LIBDIR dir.  it breaks when you
cross-compile for an ABI that doesn't exist in the root dir (--build).

--- a/configure
+++ b/configure
@@ -3582,7 +3582,7 @@ fi
 esac
 
 test -z "$PKG_CONFIG" && PKG_CONFIG=none
-if test "$PKG_CONFIG" != none ; then
+if false ; then
 
 if test "x$prefix" != xNONE; then
   cf_path_syntax="$prefix"
@@ -3626,7 +3626,7 @@ echo $ECHO_N "checking if we should install .pc files for $PKG_CONFIG... $ECHO_C
 		PKG_CONFIG_LIBDIR=`echo "$PKG_CONFIG" | sed -e 's,/[^/]*/[^/]*$,,'`/lib/pkgconfig
 	fi
 	PKG_CONFIG_LIBDIR=`echo "$PKG_CONFIG_LIBDIR" | sed -e 's/^://' -e 's/:.*//'`
-	if test -n "$PKG_CONFIG_LIBDIR" && test -d "$PKG_CONFIG_LIBDIR" ; then
+	if test -n "$PKG_CONFIG_LIBDIR" ; then
 
 # Check whether --enable-pc-files or --disable-pc-files was given.
 if test "${enable_pc_files+set}" = set; then