Test onlinequantile

[gperciva]

The test_onlinequantile binary takes a "test case" text file and runs the commands within it. Those commands are:

• 'q' to set the quantile
• 'a' to add a value to the onlinequantile set
• 'g' to get (and check) the value.

The primary motivation is to ensure that the current (presumably desirable) behaviour is retained when I start modifying the code.

[cperciva]

LGTM, please rebase and fix conflicts.

[cperciva]

I thought you fixed "Unexpected instruction" but I'm still seeing it here.

[gperciva]

I fixed it in the "line[1] isn't '\t'", but not in the default: place. Fixed and rebased.