[BUGFIX] Class Tx_Smoothmigration_Checks_Core_RemovedConstants_ResultAnalyzer does not exist

Resolves: #57391
[BUGFIX] smoothmigration 1.0.1 throws Parse error

Add php version requirement of 5.3.0 to ext_emconf.php. This ensures
we can use shorthand ternary expressions.

Resolves: #58030
Merge pull request #12 from MaxServ/master

[BUGFIX] Class Tx_Smoothmigration_Checks_Core_RemovedConstants_ResultAna...
[BUGFIX] smoothmigration 1.0.1 throws Parse error