TEMP
Merge branch 'master' of https://github.com/dart-lang/spark into umop-optimizations-markers_1282
Revert "TEMP"

This reverts commit f7bb9ebdd938b658307e9361ddad1ac4a973186a.
Clamping markers to 100 count.
Sorting markers before clamping.  Removed the index in favor of sublist().  Will revert until best plan is decided on during review.
Reverted sublist from last commit
Merge pull request #1462 from dart-lang/umop-optimizations-markers_1282

Optimizations for markers (clamping count to 100)