Replace TR_Method identity checks

[0xdaryl]

Replace the method identity checks from TR_Method with proper capability queries:

• [ ] Remove methodType checks from ras/Limitfile.cpp
  • [ ] Introduce OMRVMMethodEnv.cpp(#3765)
  • [ ] Introduce OMRVMMethodEnv.cpp to downstream project makefiles. In OpenJ9, introduce an implementation of tokenizeSignature from the logic in methodSigCanBeFound.
  • [ ] Add implementation of tokenizeSignature to OMRVMMethodEnv and call from ras/Limitfile.cpp
  • [ ] Clean up OMR APIs to methodSigCanBeCompiled (and related functions) to avoid passing in the type of method
• [ ] Allow VP constrainACall to be specialized by project
  • [ ] Create virtual innerConstrainACall (#3763)
  • [ ] Create virtual innerConstrainACall in OpenJ9 and relocate implementation and support functions to OpenJ9
  • [ ] Delete innerConstrainACall from OMR
• [ ] Remove VP getParmValues (#3761)
• [ ] Find and implement an appropriate capability query for https://github.com/eclipse/omr/blob/8e68248e56ef846faa07257d5c498a05664a50e3/compiler/z/codegen/SystemLinkage.cpp#L694 @fjeremic, I'd like your advice on this one.
• [ ] Remove methodType identity from TR_Method

[fjeremic]

Find and implement an appropriate capability query for

omr/compiler/z/codegen/SystemLinkage.cpp

Line 694 in 8e68248

I'll mostly be handling this one in an upcoming PR. The if portion should remain and the else portion migrated to OpenJ9.