rely on getrlimit to DTRT, don't make stack calibration file

* libguile/measure-hwm.scm: Remove.

* .gitignore: Update for removal.

* test-suite/standalone/test-fast-slot-ref.in:
* test-suite/standalone/test-use-srfi.in:
* am/guilec:
* check-guile.in: Revert back to normal guile invocation.

* libguile/Makefile.am: Don't make a stack calibration file, as the
  getrlimit-based limit setting should work fine.

check-guile.in

@@ -41,7 +41,6 @@ if [ ! -f guile-procedures.txt ] ; then
 fi
 
 exec $guile \
-    -l ${top_builddir}/libguile/stack-limit-calibration.scm \
     -e main -s "$TEST_SUITE_DIR/guile-test" \
     --test-suite "$TEST_SUITE_DIR/tests" \
     --log-file check-guile.log "$@"