FILE-ENABLE-SQL-READER-SYNTAX — Enable the square bracket reader syntax for the duration of the file. Macro
Uncoditionally enables the SQL reader syntax. Unlike 
      enable-sql-reader-syntax and 
      disable-sql-reader-syntax which try to keep track of whether
	the syntax has been enabled or disabled and keep track of the old read-table for restoration this function just enables it unconditionally.
      
Once enabled this way there is no corresponding disable function but instead relies on being used in a file context. The spec for load and compile-file states that the *readtable* will be restored after processing the file.
Intended to be used at the top of a file that contains sql reader syntax.
	(in-package :my-package)
	(clsql:file-enable-sql-reader-syntax)
	...
	;;functions that use the square bracket syntax.