add patches to support ppc64el better

[Breno Leitão]

There are a set of patches that were accepted upstream for PHP that enables ppc64el performance a lot. I would like to have these patches cherry-picked by Ubuntu.

The patches are:

f5e22d06c3680d1e2c906a556b4c93c8ed5b5917 - Specifying MACRO for ppc64
 1e82da8d170066fa8c456a98f0242b8a6d1e6f86 - PowerPC64 support in safe_address function
 5dbeb9e65eb01fb974cd88025a4054f4e51bdbf2 - PowerPC64 support for add and sub with overflow check
 fd045c7021cabe4462dd99611ab9d003adc203a5 - PowerPC64 support for operators with overflow check
 87e0802a997001954603e64ca3987080b50afb21 - PowerPC64 support in long multiplication

Git repository: https://github.com/php/php-src

I have backported the patches to version 5_5.6.4+dfsg-4ubuntu5, that I am going to include here.

[Hans Joachim Desserud (hjd)]

Thanks for taking your time to report this issue and help making Ubuntu better.

I have tagged this bug report with 'patch' and subscribed the Ubuntu Review Team which will hopefully take a look at this soon.

[Anton Blanchard (anton-samba)]

We have better versions of these patches in progress. Once they are upstream we will update the bug.

[Robie Basak (racb)]

OK thanks Anton. Marking Incomplete for now.

[Launchpad Janitor (janitor)]

[Expired for php5 (Ubuntu) because there has been no activity for 60 days.]