Make Opcache tests using the cli server more reliable

[mhagstrand]

Same fix applied to ext/curl/tests/server.inc
and sapi/cli/tests/php_cli_server.inc

1. Increases the amount of time for the PHP built-in server to accept a connection
2. Outputs an error if the PHP built-in server fails

[laruence]

hmm, please remove unrelated indents change.

[mhagstrand]

I have made the indentation changes that were requested.

[php-pulls]

Comment on behalf of krakjoe at php.net:

labelling

[nikic]

I'll hijack this PR to collect more flaky tests as I notice them:

• ext/openssl/tests/openssl_pkey_new_basic.phpt (key bits vary -- can be 127 instead of 128)
• ext/openssl/tests/ecc.phpt (key bits vary -- d can be 47 instead of 48)
• ext/sysvsem/tests/nowait.phpt (usleep based, sometimes child comes first)
• ext/session/tests/session_set_save_handler_basic.phpt (unlink(/home/travis/build/php/php-src/ext/session/tests/session_test_a406cd8d0e60cb8b8038f26d4930cba1): No such file or directory)
• Zend/tests/concat_003.phpt (I already increased the timing limits here once, but it's still regularly failing)

[mhagstrand]

So this patch fixes the intermittently failing test:

• ISSUE Submitting test from testFest #115 (path issue when using phar) [ext/opcache/tests/issue0115.phpt]
• revalidate_path01: OPCache must cache only resolved real paths when revalidate_path is set [ext/opcache/tests/revalidate_path_01.phpt]

Here is another intermittent failing test, I have seen not on your list:

• openssl_*() with OPENSSL_KEYTYPE_EC [ext/openssl/tests/ecc.phpt] - 2497ae0

[nikic]

PR merged via d0fcc74, thanks!

I've also fixed the pkey_new test with 78675eb.

Do you have a diff for the ecc test?

[nikic]

Took another stab at concat_003 in 432660f. If it's still flaky after that I think we should just drop the test.

[nikic]

The ecc.phpt test hopefully resolved by 2497ae0.

[mhagstrand]

I have made a fix for nowait.phpt test in the PR
#2266