[BUGFIX] Display correct line number

The line number which is stored, is the key of the array. As the numeric array starts at 0, increment the line number by one.
[BUGFIX] Store all found issues

As the found issues are added using += some issues might be overwritten when the same array key is in use.
Changed this to array_merge
[FEATURE] Add check for deprecated static methods

Added a check which checks the installed extensions for deprecated
static methods.
[FEATURE] Add check for deprecated view helpers
[BUGFIX] Display the complete require statement

When displaying an overview of all require/include statements which
should be removed, display the complete statement.
[BUGFIX] Remove false positive for init.php

When running the require/include checks, also the includes for
typo3/init.php was reported.
As this is still needed for a backend module to work changed the RegEx
to skip this file.
[BUGFIX] Changed XCLASS recogniation of classes

The XCLASS check did not correctly report when files where used as
XCLASS definition.
Changed this to look into the file which is referenced for the names
of the original and implementation class.
Also the extension key could not be found in these cases.
Added code to check for the extension key in the filepath.
[FEATURE] Check extensions for mysql_* calls

As the database API now uses MySQLi instead of the old mysql_* methods
these don't work anymore.
When an extension make use of the old methods the results might be
wrong.
[TASK] Rename from extension to smoothmigration

Renamed the extension from upgradereport to smoothmigration.