RFR (M): 7177003 C1: LogCompilation support

[Vladimir Ivanov]

7177003: C1: LogCompilation support
http://cr.openjdk.java.net/~vlivanov/7177003/

LogCompilation support in C1 - both client [1] and tiered [2] modes.

These changes are only for Hotspot. LogCompilation tool changes will be 
sent separately.

Also:
     - print code cache state (after each nmethod installation)
       Example:
	 <code_cache
		total_blobs='258'
		nmethods='50'
		adapters='133'
		free_code_cache='98839808'
		largest_free_block='98832512'/>

     - consistent nmethod numbering between ordinary and OSR compilations
     - correct printing of thread id's
     - added missed tty locks where necessary

Thanks!

Best regards,
Vladimir Ivanov

PS: actually, if it simplifies review, I can send cleanup/small 
enhancements as a separate change.	

PPS: phew! Finally deciphered how deoptimization in C1 works =)

[1] 
http://cr.openjdk.java.net/~vlivanov/7177003/webrev.00/compilation.client.log
[2] 
http://cr.openjdk.java.net/~vlivanov/7177003/webrev.00/compilation.tiered.log