Remove deprecated /e modifier

Problem/Motivation

In PHP 5.5 the PCRE /e modifier is deprecated, causing the interpreter to popup a notice:

Deprecated function: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in DatabaseConnection_oracle->escapeAnsi() (line 484 of includes/database/oracle/database.inc).

and

Deprecated function: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in DatabaseConnection_oracle->escapeReserved() (line 523 of includes/database/oracle/database.inc).

Proposed resolution

Replace preg_replace() with preg_replace_callback() where the /e modifier is used.

Greping in the code, it gives...

$ grep -nr "/e" includes/database/oracle
includes/database/oracle/database.inc:474:     $search = array ('/("\w+?")/e',
includes/database/oracle/database.inc:509:        $search = array ("/({)(\w+)(})/e", // escapes all table names
includes/database/oracle/database.inc:510:                         "/({L#)([0-9]+)(})/e", // escapes long id
includes/database/oracle/database.inc:511:		                 "/(\:)(uid|level|session|file|access|mode|comment|desc|size|start|end)/e",
includes/database/oracle/database.inc:512:			   	         "/(<uid>|<level>|<session>|<file>|<access>|<mode>|<comment>|<desc>|<size>".($ddl?'':'|<date>').")/e",
includes/database/oracle/database.inc:513:			   	         '/([\(\.\s,\=])(uid|level|session|file|access|mode|comment|desc|size'.($ddl?'':'|date').')([,\s\=)])/e',
includes/database/oracle/database.inc:514:                         '/([\(\.\s,])(uid|level|session|file|access|mode|comment|desc|size'.($ddl?'':'|date').')$/e');
includes/database/oracle/module/oracle/oracle.module:63:  $items['admin/config/development/oracle/edit/translation'] = array(

Remaining tasks

Fix. Patch. RTBC. Commit.

User interface changes

None.

API changes

None.