Fix keyword-nospace-number parsing

[client9]

Microsoft's SQL parser does this

SELECT1; --> SELECT 1;
SELECT.1; --> SELECT .1;

so in a sqli like this:

'AND 1.-1LIKE.1 EXEC xp_cmdshell 'dir

libinjection gets confused by the LIKE.1 (thinks it's a single token of 'none' type).

[Kanatoko]

PostgreSQL 8.3.5 also takes "select.1 --> select .1"
(select1; becomes error)

[client9]

sqlite3 quick test. I think no one actually accepts "SELECT1"

Will add to unit tests...

sqlite> select 1;
1
sqlite> select1;
Error: near "select1": syntax error
sqlite> select.1;
0.1
sqlite> select+1;
1
sqlite> select-1;
-1

[client9]

unit tests added

[client9]

fixed.