Use "phase" script for travis build phases.

[iphydf]

This is the first step towards unifying travis configs for toxcore,
hstox, and qtox.

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This change is

[GrayHatter]

Review status: 0 of 2 files reviewed at latest revision, 2 unresolved discussions, some commit checks failed.

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.travis.yml, line 5 at r1 (raw file):

matrix:
  include:
    - env: BUILD=hstox ENV=linux

This is called $BUILD here, but $JOB in phase, one should be renamed.

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other/travis/phase, line 13 at r1 (raw file):

try_source() {
  SCRIPT="other/travis/$1"

Should we not use ${JOB} here instead of $1 to make it more readable?

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Comments from Reviewable

[iphydf]

Review status: 0 of 2 files reviewed at latest revision, 2 unresolved discussions.

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.travis.yml, line 5 at r1 (raw file):

Previously, GrayHatter (Gregory Mullen) wrote…

This is called $BUILD here, but $JOB in phase, one should be renamed.

Done.

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other/travis/phase, line 13 at r1 (raw file):

Previously, GrayHatter (Gregory Mullen) wrote…

Should we not use ${JOB} here instead of $1 to make it more readable?

That would be incorrect. `$1` is the first argument to `try_source` called below.

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Comments from Reviewable

[nurupo]

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Reviewed 1 of 2 files at r1, 1 of 1 files at r2.
Review status: all files reviewed at latest revision, 2 unresolved discussions, some commit checks failed.

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Comments from Reviewable

[GrayHatter]

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Review status: all files reviewed at latest revision, all discussions resolved, some commit checks failed.

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Comments from Reviewable

[GrayHatter]

Reviewed 1 of 2 files at r1, 1 of 1 files at r2.
Review status: all files reviewed at latest revision, all discussions resolved, some commit checks failed.

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Comments from Reviewable