Add precompilation hints for macros (~10% improvement)

[IainNZ]

Supersedes #531

Julia 0.4.0-dev+6805
Current branch: macroprecomp
Current commit: 4d7edc05f9d156f121db453880804f179b7088de
Test 1:    2.76 s
Test 2:    2.73 s
Test 3:    2.74 s
Test 4:    3.79 s

Julia 0.4.0-dev+6805
Current branch: macroprecomp
Current commit: 4d7edc05f9d156f121db453880804f179b7088de
Test 1:    2.76 s
Test 2:    2.75 s
Test 3:    2.69 s
Test 4:    3.91 s

-------------------------------------------------------

Current branch: macroprecomp
Current commit: aa6a9460d9a62e32c1c5b8d3798bf0d5b21d9f2e
Test 1:    2.76 s
Test 2:    2.64 s
Test 3:    2.74 s
Test 4:    3.92 s

Julia 0.4.0-dev+6805
Current branch: macroprecomp
Current commit: aa6a9460d9a62e32c1c5b8d3798bf0d5b21d9f2e
Test 1:    2.76 s
Test 2:    2.74 s
Test 3:    2.79 s
Test 4:    3.87 s

-------------------------------------------------------

Julia 0.4.0-dev+6805
Current branch: master
Current commit: 56b0f93d3081f5f2245a7edb54d6ea91bd7c58bb
Test 1:    3.08 s
Test 2:    3.00 s
Test 3:    3.11 s
Test 4:    4.22 s

Julia 0.4.0-dev+6805
Current branch: master
Current commit: 56b0f93d3081f5f2245a7edb54d6ea91bd7c58bb
Test 1:    3.14 s
Test 2:    3.02 s
Test 3:    3.20 s
Test 4:    4.15 s

[IainNZ]

This is just from the last PR so far, I'm adding more hints now based on tracing the types in the expanded perf test, hope to get more.

Done

[IainNZ]

I'm going to run all our tests and dump all methods, see if I can just algorithmically generate them.

[IainNZ]

Done, ready to merge once green

[joehuchette]

This won't work on v0.3

[IainNZ]

It isn't included on 0.3...

[joehuchette]

Ah, missed where the include was. Is it worth adding the script you used as a comment?

[IainNZ]

Unfortunately there is no script. I manually added code to print to a file, then just did sorted, uniq'd, and search replaced. Itd be neat to have something in Base to automatically report the argument types used.

[mlubin]

Precompile.jl needs an MPL header