RFR (S): 8136672: editor configuration for IDEs

[Wojtowicz, Tomasz]

Review Title:      editor configuration for IDEs
Review ID:          #8136672
Diff: 		http://cr.openjdk.java.net/~mcberg/8136672/webrev.01
Description:        In order to avoid jcheck errors like following ones:
		"Tests found:
		
		src/cpu/x86/vm/macroAssembler_x86.cpp:8686: Trailing whitespace
		src/cpu/x86/vm/macroAssembler_x86.hpp:1330: Trailing whitespace
		src/cpu/x86/vm/stubGenerator_x86_32.cpp:3001: Trailing whitespace
		src/cpu/x86/vm/stubGenerator_x86_64.cpp:3968: Trailing whitespace
		src/cpu/x86/vm/stubRoutines_x86.cpp:136: Trailing whitespace
		src/share/vm/interpreter/interpreter.cpp:594: Carriage return (^M)
		src/share/vm/interpreter/templateInterpreter.cpp:426: Carriage return 
		(^M)
		src/cpu/x86/vm/crc32c.h:31: Trailing whitespace"
		
		I propose to introduce an .editorconfig file which would encapsulate common layout required settings. EditorConfig (http://editorconfig.org/) provides plugins for most popular editors/IDEs and make sure that every modification adheres to the stated rules:
		hotspot/.editorconfig file contents
		                root = true
		                
		                [*]
		                indent_style = space
		                indent_size = 2
		                end_of_line = lf
		                charset = utf-8
		                trim_trailing_whitespace = true
		                insert_final_newline = true
Link: 		https://bugs.openjdk.java.net/browse/JDK-8136672
Author:                Tomasz, Wojtowicz

--
Thank you,

Tomek