ApiAnnotations : rationalise tests

At the moment the API Annotations tests have a driver that has been copy/pasted multiple times.

Compile it once, and run it for each test case.

Trac metadata

Trac field	Value
Version	7.10.1
Type	Task
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
Test case
Differential revisions
BlockedBy
Related
Blocking
CC	mpickering
Operating system
Architecture

changed milestone to %7.10.2

changed weight to 5

added Ttask Trac import labels

mentioned in commit e00910b0

closed

In HEAD, and also merged to ghc-7.10.

Trac metadata

Trac field	Value
Resolution	Unresolved → ResolvedFixed

added 1 deleted label

added API annotations label

added Pnormal label