Added support for secureTextEntry (passwords)

Added a secureTextEntry property. Enabling this property causes the
TextField to display the entered text as bullets.
Changed some property names to match conventions.

Changed m_pSecureTextEntry to m_bSecureTextEntry and renamed
getSecureTextEntry to isSecureTextEntry
compare using epsilon and absolute difference
Merge branch 'master' of https://github.com/MarcelBloemendaal/cocos2d-x into MarcelBloemendaal-master
Added CCB_MEMBERVARIABLEASSIGNER_GLUE_WEAK

We've found it useful to use CCB_MEMBERVARIABLEASSIGNER_GLUE_WEAK in
situations where we don't want CCObject derived pointers retained. It's
also useful if you want to assign a pointer dynamically cast to an
abstract base class such as CCLabelProtocol.
fixed #2068: Fixing a compilation error on win32 since "•" couldn't be recognized by vs compiler.
fixed #2068: Updating source format.
fixed #2068: Tab ~> 4 spaces.
Merge pull request #2403 from dumganhar/iss2068-cctextfield-secure

fixed #2068: Adding a secureTextEntry property. Enabling this property causes the TextField to display the entered text as bullets.
Update AUTHORS
Merge pull request #2402 from brawsome/master

fixed #2069: Adding new macro CCB_MEMBERVARIABLEASSIGNER_GLUE_WEAK to CCBMemberVariableAssigner.h
Update AUTHORS
fix a compiling error
Merge pull request #2404 from minggo/assetmanager

fix a compiling error
Merge pull request #2398 from lgb/float_comparison_issue

fixed #1935: Float comparison must not use "==" in the equal function of CCPoint and CCSize, we should compare float number by using epsilon and absolute difference.
Update AUTHORS
Removing unused file(uthash.h) in JSB projects.
Merge pull request #2405 from dumganhar/master

Removing unused file(uthash.h) in JSB projects.
Adding popSceneBack() function to CCDirector

This function deletes the running scene and returns the actual scene
back to the caller. This way, we can simply use it to perform a
transition animation, like this:

    CCDirector::sharedDirector()->replaceScene(
            CCTransitionSlideInL::create(0.5,
            CCDirector::sharedDirector()->popSceneBack()));

Signed-off-by: Rodrigo Goncalves de Oliveira <rodrigo.goncalves@openbossa.org>