Grow the EQ classes for globals at the end of the BU pass.  This shrinks memory usage in the TD pass for 254.gap from 31.3MB to 3.9MB.
Grow the EQ classes for globals at the end of the BU pass.  This shrinks
memory usage in the TD pass for 254.gap from 31.3MB to 3.9MB.


git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@20834 91177308-0d34-0410-b5e6-96231b3b80d8

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