Changes to sort functions to make them more stable.

[sdobbs]

(boo to sorting integers...)

[gluex]

Test status for this pull request: SUCCESS

Summary: /work/halld/pull_request_test/sim-recon^sdobbs_sort_fixes/tests/summary.txt Logs: /work/halld/pull_request_test/sim-recon^sdobbs_sort_fixes/tests/log

Build log: /work/halld/pull_request_test/sim-recon^sdobbs_sort_fixes/make_sdobbs_sort_fixes.log Build report: /work/halld/pull_request_test/sim-recon^sdobbs_sort_fixes/report_sdobbs_sort_fixes.txt Location of build: /work/halld/pull_request_test/sim-recon^sdobbs_sort_fixes