Resync Boolean Type Case

[jacobsantos]

TRUE to true and FALSE to false.

It seems patches weren't inline with the lowercase usage of the boolean type. Depends on programmer preference.

Change case of booleans in files.

From what I remember, the use of the constants true and false should be lowercase. Patch looks good in that sense to me.

Well, to me they should be lowercase because of having to type them out a lot. The other reason is that language reserve words or keywords should always be lowercase to differentiate from other user defined terms.

The argument is whether or not the language type lowercase usage should be used verses the language implementation of them actually being constants, albeit case-insensitive constants.

The problem also is that if we switch over to using what is defined as constants, we'll have to use NULL instead of null as well.

No way this patch still applies.

This patches a few external libraries. We shouldn't patch those, it becomes more difficult to merge in changes from upstream later on.

FALSE is in _http_build_query() once, but that's it. The rest are in external libraries.

Duplicate of #16302.