Fix alertmanager API path.

Change-Id: Iea6059decb121c7e75c1828406c4e0b3f2fc1c5d
Compact everything to the same sample group size.

Change-Id: Ibb4f3a5d76173d64de916ef1eb41ab5d7900c97b
Merge "Compact everything to the same sample group size."
Rename {Scalar,Vector}Literal to {Scalar,Vector}Selector.

Change-Id: Ie92301f47f5f49f30b3a62c365e377108982b080
Rename persistence_adapter.go -> view_adapter.go

Change-Id: Ib45081393b734531d2f85a02f46e87930aab3273
Merge branch 'master' of github.com:prometheus/prometheus into lint-cleanup
Another incremental lint fix.

Change-Id: I054a4a841d8f743f5d5e800d880cdbb2d3de04c9