No big secret, I just got hungry and went out to have dinner :laugh::silly:
Okay, so here is the simple method for this. First go to this post and download the Odexer Tool 1.1.1 zip. place in root of your sd card. http://xdaforums.com/showthread.php?t=2527268
1) Reboot into recovery,
2) Flash the Rom zip and The odexer tool 1.1.1 zip. Do not flash Gapps (you can but you will understand why later on)
3) Reboot. Go through setup if it shows up.
4) Start Teminal Emulator. Go to preferences and select emulator type as "Linux". Give it root permissions.
5) Now type in "su" followed by odex
6) It will give you a list of options. What I did was use the option "all". You can use just "sysapp" if you do not want to odex framework. I suggest using the "All" option.
7)It will run and in the end show you the status. Along with it it will show you remaining space on your /system parition. Kepp an eye on this.
8) Reboot into recovery. Flash Gapps.
9) Go back to Terminal ...type su -> then "odex" and select desired option. It should go all the way through and fail on GMScore and maybe Phonesky (could be others in your case). ** This has happened since there is no more space left on your /system partition.
10) come out of Terminal(no need to exit it) and open your favourite Root explorer ..... clear at least an amount of space equal to whatever apps failed (in my case gmscore and phonesky required around 10mb. I also use /system/app mover app to move apps like browser and others to /data folder.) ...delete unwanted ringtones,notifications, fonts ....
11) go back to Terminal and once again type "odex" Let it run. since you now have space it should show all 3 Framework, app, app-priv as Odexed.
12) Reboot!!! Switch to ART and profit ..... There will and should not be any FC's after using this method. If you get any, you did something wrong. Start from scratch (aka...wipe system with ext4 option from bootmenu)
Disclaimer: You *will* not be able to run Whatsapp using modified libart.so with this method. The minute you change the libart.so file, the system will update *all* apps to run using the new libart.so file. ...You will gt system wide FC's.
I have even used the Pure Performances Golden Edition mod zip with this build and now my phone is flying..... only drawback is Whatsapp but that is working fine in 4.4.1. Those who need it can wait till 4.4.1
If this is helpful in general to users here, please do ask Quarx to add the link to the OP for the Odexer tool thread.