Allow condition keys with : or ? chars in sequence

This was failing when attempting to cast values inside a key; ie:

`'Model.field::integer' => array(1, 2)` or
`'"Model"."field"::integer' => array(1, 2)`

where the number of `:` or `?` characters is equal to the number of elements in the value array. 

That would cause it to attempt to run the `__parseKey()` function, ending up with a condition segment string such as `... "Model"."field"::integer = ` which was not the intended behavior.

This patch looks to see if the characters are all next to each other. If so, we can safely assume that the user is not trying to interpolate the values into the key string.

Since it checks for question marks first, this also allows casted condition keys to use BETWEEN syntax, ie: `'"Model"."field"::integer BETWEEN ? and ?' => array(1, 100)`

would output the expected condition:
`"Model"."field"::integer BETWEEN '1' and '100'`
Added test case for : chars in sequence

Updated the `testParenthesisInArrayConditions()` method to include test case for commit https://github.com/ozzyogkush/cakephp/commit/21c75062cb849f088d4c5b1f1f3c41ee74645621 where condition keys can have `:` or `?` keys in sequence. Mainly for Postgresql casting types using `::` syntax where you still may want to use the `BETWEEN` syntax.
Merge pull request #1 from ozzyogkush/1.3

Added test case for : chars in sequence
Made better test cases for pull #2543

Better test cases for commit https://github.com/ozzyogkush/cakephp/commit/21c75062cb849f088d4c5b1f1f3c41ee74645621 - shows how to use quotes on model/field in condition key when casting to ensure proper quotes in returned condition string.
removed unnecessary preg_match, spaces round . op

Removed an unnecessary `preg_match()` when checking for `?` characters in a condition key string - only needed when checking for `:` characters to ensure they're not next to each other. Added spaces around the `.` operators that I forgot to do in a previous commit.
removed comments which were wrong

Removed comments indicating known bugs, when they were not bugs.
preg_match() strict equality

Use strict equality check when looking at return value of a `preg_match()` call.
Coding standards

Fixed a couple coding standards and strict equality flubs
Merge pull request #2543 from ozzyogkush/patch-1

1.3 Allow condition keys with : or ? chars in sequence