PHP: simplify installation

[stanley-cheung]

• For PHP installation is too complex #4517 "PHP installation is too complex" and Create binary artifacts for PHP distribution package #4771 "Create binary artifacts for PHP distribution package"
• Template-ize config.m4 and package.xml. Moved these 2 files all the way up to the base grpc/ directory
• Now a simple pear package command will build the PHP PECL package and gives a package named similar to grpc-0.8.0.tgz
• Now PHP installation can be simplified to these 2 commands (on Debian at least)
  • sudo apt-get install -y php5 php5-dev php-pear phpunit
  • sudo pecl install grpc-beta
• Added a bunch of scripts to hook up with Jenkins continuous building and testing the PHP PECL package

[grpc-kokoro]

Can one of the admins verify this patch?

[grpc-kokoro]

Can one of the admins verify this patch?

[stanley-cheung]

Here's a full Jenkins run building and testing the PHP PECL package: https://grpc-testing.appspot.com/view/Artifacts/job/gRPC_distribtest/118/

[jtattermusch]

Would people need to always invoke with php -d extension=grpc.so when they want to use grpc?

[stanley-cheung]

Nope. Users can (and should) add that flag to the php.ini file. There are various mechanism / location for that file depending on how PHP is invoked (cli, apache, nginx, etc).

[jtattermusch]

this is ok to test

[jtattermusch]

Besides the minor nits, basically looks good to me.

[jtattermusch]

ping, are you planning to fix the nits?

[stanley-cheung]

• Fixed the nit
• Basic tests passed
• Interop tests failure are unrelated
• Artifacts tests passed for PHP https://grpc-testing.appspot.com/view/Artifacts/job/gRPC_distribtest/164/