Update BlockOilFlowing.java

Updated to use 1.5 texture system for liquid.

Checked that it will compile but untested code. The 2 methods works for my own liquid in test environment.

Do not merge if you have already updated the oil so that it textures.

Still needs the actual texture/animation files
Oil textures
Updated to oil textures that Sparkst3r supplied
Updated for obfuscations

The field 94425 that I duplicated is a private field, and the names that someone has put as the deobfuscation name of the real one is a pile of crap so I will leave it as that till I or someone else can come up with a better one.
Update BlockOilStill.java

Fix quick bug that Flow86 pointed out.
Update BlockOilStill.java

I forgot something
Update BlockOilStill.java

Missed an @SideOnly
Update BlockOilFlowing.java

Missed an @SideOnly
Merge pull request #684 from TarzanBuzzyMan/patch-3

Update oil to use 1.5 texturing