Fix problem with array to string converion in CDbMigration

methods accept array as of changes in #2090 and #2817/#2818 so
CDbMigration output has to reflect the changes and do not fail.

fixes #3064
Fixes #3078: Migration table primary key is too long for utf8mb4 databases
Merge pull request #3080 from dbanck/patch-1

Fixes #3078: Migration table primary key is too long for utf8mb4 databas...
fixed a typo on docs/guide/zh_cn/basics.component.txt

Changed
如果句柄决定组织后续句柄被执行
to
如果句柄决定阻止后续句柄被执行
Merge pull request #3099 from yang-he/master

fixed a typo on docs/guide/zh_cn/basics.component.txt
Linkfix for Net_IDNA2 License File
Merge pull request #3101 from DaSourcerer/patch-19

Linkfix for Net_IDNA2 License File
Try running unit tests on HHVM
Merge pull request #3109 from ptarjan/patch-1

Try running unit tests on HHVM
reverted #3109 as tests are not running

more work on that needed first.
[NL] Dutch translation of 'No' modernized
Merge pull request #3123 from ametad/master

[NL] Dutch translation of 'No' modernized
Fixes a MySQL syntax error if you specified an offset without a limit.
Merge pull request #3125 from takobell/master

Fixes a MySQL syntax error if you specified an offset without a limit.
Fixed the bug that backslashes are not escaped by CDbCommandBuilder::buildSearchCondition()
Fixes #3134: Fixed the issue that query cache returns the same data for the same SQL but different query methods
Typo in word "nekorkts", should be "nekorekts"
Merge pull request #3135 from Deele/patch-1

Typo in word "nekorkts", should be "nekorekts"
Fixes #3137: Upgraded HTMLPurifier to 4.6.0
Fixes #3115: Updated phpdoc for better code completion in modern IDEs