Configure: Split the usecrosscompile section from the to/from/run section

Beyond organization, this also makes sure that usecrosscompile is
always set to undef if we're not cross-compiling, which enables
code to realibly use $Config{usecrosscompile} to check for a
cross-compiling perl.

diff --git a/Configure b/Configure
index ba8e7f4..5efc25b 100755 (executable)
--- a/Configure
+++ b/Configure
@@ -2871,6 +2871,15 @@ $define|true|[yY]*)
        case "$croak" in
        y) echo "Cannot continue, aborting." >&4; exit 1 ;;
        esac
+    ;;
+*)
+    usecrosscompile='undef'
+    ;;
+esac
+
+: Define -Dtargethost=somecomputer to run compiled tests on another machine
+case "$usecrosscompile" in
+$define|true|[yY]*) echo "Using targethost $targethost." >&4
        case "$src" in
        /*) run=$src/Cross/run
            targetmkdir=$src/Cross/mkdir