Performance issue with many kbase models and many large spreadsheets

[tkobayas]

When a KieProject has many kbase models and many large spreadsheets, buildAll() becomes slow.

[tkobayas]

AbstractKieProject.buildKnowledgePackages is called per kbase model.
KieBuilderImpl.filterFileInKBase is called per file.

Then, KieBuilderImpl.packageNameFromDtable -> DecisionTableProviderImpl.loadFromResource -> SpreadsheetCompiler.compile is called.

If a KieProject has 20 kbase models and 20 spreadsheets, packageNameFromDtable is called 400 times. One packageNameFromDtable may not take very long time (1 or 2 seconds), but 400 times are significant.

[mariofusco]

Fixed by 011e17a