Fix promotion calculation

[cmoetzing]

I kept the old calculation as fallback. Removing it fails some Sun JDK6 tests.

[codecov-io]

Codecov Report

❌ Patch coverage is 76.92308% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 70.55%. Comparing base (1075435) to head (a979369).
⚠️ Report is 54 commits behind head on develop.

Files with missing lines	Patch %	Lines
...java/com/tagtraum/perf/gcviewer/model/GCModel.java	81.81%	0 Missing and 2 partials ⚠️
...perf/gcviewer/imp/DataReaderUnifiedJvmLogging.java	50.00%	0 Missing and 1 partial ⚠️

❌ Your patch check has failed because the patch coverage (76.92%) is below the target coverage (85.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@              Coverage Diff              @@
##             develop     #242      +/-   ##
=============================================
+ Coverage      70.49%   70.55%   +0.05%     
- Complexity      1522     1527       +5     
=============================================
  Files            146      146              
  Lines           8632     8639       +7     
  Branches        1392     1395       +3     
=============================================
+ Hits            6085     6095      +10     
+ Misses          1963     1959       -4     
- Partials         584      585       +1     

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[cmoetzing]

Why is it that Codacy does not understand wildcard imports?