RFR(S): 8130858: CICompilerCount=1 when tiered is off is not allowed any more

[Roland Westrelin]

For the record, I asked Gerard to take a look at that change and he recommended I move the code to the commandLineFlagConstraintsCompiler.* files. Here is what I’m pushing:

http://cr.openjdk.java.net/~roland/8130858/webrev.01/

Roland.