Compile: does not symlink each sub recipes in a meta recipe about compile

[lucasvr]

There are actually two issues related to that bug. First, Compile runs in a sandbox environment, and the creation of the sandbox seems to be happening in the wrong place when it comes to building meta recipes. Second, we need to modify Compile to include the option "symlink_each_time=yes" when building meta recipes.

The second issue needs to be addressed while taking into consideration the automatic respawn of Compile using the Runner virtualization tool. There are some tricky details that we need to take into account to fix this bug, but it is indeed a major one that should be fixed soon. Thanks for the report.

[hishamhm]

Second, we need to modify Compile to include the option "symlink_each_time=yes" when building meta recipes.

In fact, I have this exact modification done in a local branch (using this exact name symlink_each_time=yes). I haven't done much testing on it, though. I opened #31 with it, it was a small modification.