Merge pull request #118 from mlhetland/master

Added userimg switch
Bump julia to 0.3.2
Fix errant `gmp4` in isl011-julia
Fix cloog018-julia as well
add libgit2 for 0.4
Merge pull request #124 from tkelman/patch-1

add libgit2 for 0.4
Option to use system libm.
Bump suite-sparse bottle
Drop 10.7 for now, get stuff built for 10.8 and 10.9
Merge pull request #125 from ntessore/system-libm

Option to use system libm.
Add yosemite bottles
Bottle Julia herself!
When building a Julia bottle, add MARCH=core2!
New Julia bottles with MARCH=core2
arpack-julia and suite-sparse-julia were missing out on the fun!
Only try to clone doc/juliadoc when installing v0.3.X