Change long to size_t or int

[minggo]

1. use size_t in ccCArray
2. use size_t for data length, such as used in Image and Texture2D
3. changelong to int in some places
4. fix some warnings and hungarian

[ricardoquesada]

since this is capacity size_t is valid.
But int is OK too in this context I guess.

[ricardoquesada]

One more thing:

I've just realized that size_t is different than ssize_t, so I think we should replace size_t with ssize_t :-)

ssize_t means "signed size_t", and we should try to use "signed" types as much as possible.
https://github.com/cocos2d/cocos2d-x/blob/develop/docs/CODING_STYLE.md#on-unsigned-integers

So, this will also fix the issue regarding return -1 when an object is not find in getIndexOfObject

[minggo]

I think i have to close this pull request, since @dumganhar is implementing container in #4420. After merging #4420, Array and other container will be deprecated, many codes will use new container instead. And i will replace size_t with ssize_t.

[ricardoquesada]

ok.

[hulefei]

Will cocos2dx replace Array with Vector?

[minggo]

Yep, we suggest to use cocos2d::Vector in 3.0.

[minggo]

New pull request for this issue is #4438.