RFR(S): 8043638: Multiple compilation attempts break LogCompulation, lead to confusing PrintInlining output

[Roland Westrelin]

When C2 attempts the compilation of a method multiple times:

1) the PrintInlining output shows inlining decisions for all attempts together (if compilation failure happens late in the compilation process)
2) the log of the multiple attempts confuses the LogCompilation tool.

http://cr.openjdk.java.net/~roland/8043638/webrev.00/

Roland.