Issue #11: Install XHProf from source

[oxyc]

Haven't really tested, but lets see what travis says. Should add tests or at least verify that the lib and ui directories are in place and working.

[oxyc]

We should also add docker tests here so we can verify the paths exist. I changed so both RedHat and Debian places the lib/html directories in the same location. Also nice that these variables actually do something now.

[geerlingguy]

Good idea. We also need to set a default workspace variable so the tests can work.

[oxyc]

Okay apparently the hour is too late for me, I keep making odd typos everywhere. I'll work further on this tomorrow.

[geerlingguy]

Sounds good. I'm fading fast, too.

[oxyc]

Same galaxy error as on Drupal VM

[oxyc]

Tests are passing! I must admit I was expecting something more, but I verified that the autocomplete and the tooltips now work :)

I'm building it using ansible from pip on Centos as the php role installation still fails ansible/galaxy-issues#134 (comment).

This PR resolves: #11, #8 and partly #7.

[thom8]

+1 on this PR -- the pear module still seems to have idempotency issues.