Move ParseTimeFatalException to hphp/parser

Summary: Allow the parser to throw this without making it dependent on hphp/runtime

Reviewed By: @markw65

Differential Revision: D1729474

Signature: t1:1729474:1418341460:97a1b0b693ce283c0448149d10dd4033f75aecc1
Fix TransFlags support in makeExit

Summary: I broke this during some refactors.

Reviewed By: @swtaarrs

Differential Revision: D1731904

Signature: t1:1731904:1418248995:fa02fe6fb4b492dd22bbf62358af692414175101