RFR: 8264868: Reduce inclusion of registerMap.hpp and register.hpp

[Ioi Lam]

Register.hpp is included 815 times, and registerMap.hpp is include 862 times (out of about 1000 HotSpot .o files).

This can be reduced by refactoring the popular header file **frame.hpp**, so that it doesn't include registerMap.hpp anymore. This reduces the number of .o files that include register.hpp to 612, and that of registerMap.hpp to 109.

The total number of lines of C++ code compiled for HotSpot is reduced by about 0.5%.

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Commit messages:
 - 8264868: Reduce inclusion of registerMap.hpp and register.hpp

Changes: https://git.openjdk.java.net/jdk/pull/3384/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=3384&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8264868
  Stats: 263 lines in 27 files changed: 203 ins; 51 del; 9 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3384.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3384/head:pull/3384

PR: https://git.openjdk.java.net/jdk/pull/3384