MtpDatabase JNI: Fixed a memory-leak in getObjectPropertyValue().

The jstring "stringValue" was not never freed.
In the case where "str" was NULL the whole cleanup part (see "goto out")
was even skipped.
This patch makes getObjectPropertyValue() behave like
getObjectPropertyList().

Change-Id: I5a7ec3611036f5253a054b00064999bcd1d1c29e
frameworks/base: Fix to avoid crash when the tab is not set from app

As the current tab is not set from application, getChildTabViewAt
returns Null value. Added a condition which checks whether mSelectTab
is set to first Tab.

Change-Id: I72313697e2c1c7b66a70078e82e509bfa244721b
CRs-Fixed: 321176
CRs-Fixed: 378466
Frameworks: Fix to avoid crash when the tab is not set.

Tab is not highlighted in Videoapp unlike Music app.
Instead the list is highlighted with mSelectedTab a negative value
when onFocusChange is called.
Add a check for mSelectedTab.

Change-Id: I930657b8a9be4be4d973f876242a15a667ec6f94
CRs-Fixed: 657606
hwui: Always enable the scissor while composing layer

Due to scissor optimization feature added in KK, scissor was disabled
all the time. Hence the undefined areas/region of textures are not
masking properly with GL_LINEAR filter mode.

Change-Id: Ifbbde2c67a4c01e45eda07ada709e066255fffcb
CRs-fixed: 645077
Add looper to the thread to fix system_server crash

Toast message internally creates handler and we can't create
handler inside thread that has not called Looper.prepare().
Thus, we added looper to the thread to avoid system_server
carsh.

Change-Id: I09b9c4923c109f0b2707f8346e091efbd24b5089
CRs-Fixed: 669467