Add 'koch testinstall' for linux/osx

[kaushalmodi]

https://gitter.im/nim-lang/Nim?at=5bc9004d069fca52a5598a63

[kaushalmodi]

@Araq I tried adding koch testinstall, but it is failing with this error:

./koch tests
bin/nim cc --taintMode:on --opt:speed testament/tester
Error: unhandled exception: No such file or directory [OSError]
FAILURE
FAILURE

Full log - *Search for [phase 6 to directly reach the koch testinstall part.

I have removed that command from my experiment repo for now, but this is how it looked before I removed those lines:

https://github.com/kaushalmodi/nightlies/blob/ff99a34cf7ac83674e7aec5ea8df24c933cc03c4/.travis.yml#L64-L65

[kaushalmodi]

Looks like the testament/ dir is not getting packed into the tar.xz at all.

[kaushalmodi]

Looks like the compiler/installer.ini needs to be thoroughly reviewed and updated. Probably testament needs to be added here to fix this?

https://github.com/nim-lang/Nim/blob/cd9bc941e1315f47efd1ec567249a16347c0319a/compiler/installer.ini#L91

@Araq

[Araq]

Looks like the compiler/installer.ini needs to be thoroughly reviewed and updated. Probably testament needs to be added here to fix this?

Exactly, consider it done.

[kaushalmodi]

Ref: https://github.com/nim-lang/Nim/commit/00f84d3d22cdeed7b4a2060e6307e3a742729055

[kaushalmodi]

@genotrance The initial goal for the nighties will be considered "done" once "koch testinstall" passes on all platforms. If you don't get to this earlier, I'll try running "koch testinstall" later today to see it has now started passing.

[kaushalmodi]

koch testinstall times out Travis at just 50 mins:

https://api.travis-ci.org/v3/job/474484670/log.txt

progress[all]: i: 107 / 110 cat: examples
testament/tester --nim:compiler/nim pcat examples 

The job exceeded the maximum time limit for jobs, and has been terminated.

[kaushalmodi]

@Araq mentioned here that a workaround for this timeout would be to limit koch testinstall to run only "megatest".

[kaushalmodi]

Look into Travis Build Stages to see if that circumvents with timeout issue: https://gitter.im/nim-lang/Nim?at=5c2cd7e42863d8612bc9113d

[kaushalmodi]

Putting the timeout issue aside, I also see koch testinstall failing many tests because of "nodejs binary not in PATH".

https://api.travis-ci.org/v3/job/474484670/log.txt

testament/tester --nim:compiler/nim pcat arithm 
JOINED: tests/arithm/tarithm.nim C
PASS: tests/arithm/tashr.nim C                                     ( 0.83025384 secs)
FAIL: tests/arithm/tashr.nim JS
Test "tests/arithm/tashr.nim" in category "arithm"
Failure: reExeNotFound
Expected:


Gotten:
nodejs binary not in PATH

FAILURE! total: 3 passed: 1 skipped: 1 failed: 1

[Araq]

koch testinstall now works.