tmsprung is dead, long live MFE_SPRUNG a bunch of other painful tweaks to springs to fix this long-standing "AAA IM STUCK FOREVER UNDER A SPRING" thing when you touch a vertical spring from below (or above for reverse)

git-svn-id: https://code.orospakr.ca/svn/srb2/trunk@9037 6de4a73c-47e2-0310-b8c1-93d6ecd3f8cd