PHP 5.6 RFC default encoding

[yohgaki]

Implementation of this RFC.
https://wiki.php.net/rfc/default_encoding

[smalyshev]

This has a lot of failing tests on Travis that did not fail previously. Could you check that? Moreover, some tests segfault.

[yohgaki]

Last commit should fix segfaults. I'll check travis build later.

Using travis/compile.sh configure option under my Fedora19 x86_64 (ja_JP.UTF-8)

My branch
=====================================================================
TEST RESULT SUMMARY
---------------------------------------------------------------------
Exts skipped    :   25
Exts tested     :   55
---------------------------------------------------------------------

Number of tests : 13234             11103
Tests skipped   : 2131 ( 16.1%) --------
Tests warned    :    0 (  0.0%) (  0.0%)
Tests failed    :   49 (  0.4%) (  0.4%)
Expected fail   :   33 (  0.2%) (  0.3%)
Tests passed    : 11021 ( 83.3%) ( 99.3%)
---------------------------------------------------------------------

PHP-5.6 branch
=====================================================================
TEST RESULT SUMMARY
---------------------------------------------------------------------
Exts skipped    :   24
Exts tested     :   54
---------------------------------------------------------------------

Number of tests : 13241             11090
Tests skipped   : 2151 ( 16.2%) --------
Tests warned    :    0 (  0.0%) (  0.0%)
Tests failed    :   54 (  0.4%) (  0.5%)
Expected fail   :   33 (  0.2%) (  0.3%)
Tests passed    : 11003 ( 83.1%) ( 99.2%)
---------------------------------------------------------------------

[yohgaki]

Hmm. php-src's PHP-5.6 branch does not have failed tests, but this does.
There are lots of cli server errors and I get these on my php-src clone also.
It seems I have to check these tests.

[yohgaki]

@smalyshev
Now it compiles and passes all tests.
Thank you for your comment and patience, Stas!

[yohgaki]

@smalyshev I'll merge this if you are OK with current code and tests. Please let me know when you finish review.

[yohgaki]

Raising error might be better, since this code would pass any encoding when invalid encoding name is provided.

[yohgaki]

Commenting out this speeds up a little. We may be better comment out all INI values if they are the same as compiled defaults

[yohgaki]

@smalyshev Thank you for your help :)
I think it's good enough to merge now. I'll merge this weekend unless I have more comment.

[yohgaki]

Committed & Close.
The last compile failure is due to Derick's commit.