Remove hack for IntelliJ IDEs, replace with caveat

[radeksimko]

Related issues:

• Pycharm and Intellij-idea signature have been modified after installed #9572
• JetBrains IDEs are altered to load with JDKs > 1.6 #6910

TL;DR reasons:

• hack was causing issues during upgrades
• vendor officially doesn't support Java >6 anyway

Details:

@w7tek in #9572 (comment)

Unfortunately, according to the conversation along the same issue, it appears the idea.properties is picked up from a different location when using the CE than when using Ultimate.

True. I've been just playing around and I can confirm that this hack

echo "JVMVersion=1.6+" > ~/Library/Preferences/IntelliJIdea14/idea.properties

only works for IntelliJ IDEA 14 and AppCode, but doesn't for any other IDE (not even IntelliJ IDEA 14 CE). Maybe they have add this functionality into IntelliJ core and AppCode has already adopted it, so other IDEs may do in the future as well?

I wonder what's the motivation of JetBrains for being stuck 4 years behind (that's when Java 7 was released)... 😕

[ctwise]

"I wonder what's the motivation of JetBrains for being stuck 4 years behind (that's when Java 7 was released)..."

It's due to many GUI defects still outstanding in Java 7, 8 and in previews of 9 as well. Oracle doesn't seem to care about AWT/SWT anymore and have moved on to JavaFX. As a result outstanding GUI issues in OS/X aren't getting addressed (and obviously haven't been for a very long time). JetBrains is apparently trying to create a patched JVM that deals with at least the worst problems and is planning on bundling it with the IDEs. You can obviously use Java 7+ to run the IDEs but JetBrains gets the same defect reports over and over again when running on those.

[msheakoski]

This patch should also be applied to 0xdbe-eap. When using it with JVM>6, the font rendering on OSX is horrible.

[sebroeder]

We should remove the plist hack from the JetBrains formulas in the homebrew-versions repository, too. Homebrew/homebrew-cask-versions#847 could help with this for the eap versions, if accepted by the maintainers.