missing file
adding graph module
scc.txt removed
hgignore updated
graph module packages renaming
symbol graph builder

--HG--
rename : calculation/src/test/scala/org/encalmo/calculation/CalculationUnitTest.scala => calculation/src/test/scala/org/encalmo/calculation/SymbolsGraphUnitTest.scala
formula related classes and functions

--HG--
rename : calculation/src/main/scala/org/encalmo/calculation/SymbolsGraph.scala => calculation/src/main/scala/org/encalmo/calculation/SymbolGraph.scala
rename : calculation/src/test/scala/org/encalmo/calculation/SymbolsGraphUnitTest.scala => calculation/src/test/scala/org/encalmo/calculation/SymbolGraphUnitTest.scala
calculation flow improvement part 1

--HG--
rename : calculation/src/main/scala/org/encalmo/calculation/BoundExpression.scala => calculation/src/main/scala/org/encalmo/calculation/PinnedExpression.scala
rename : document/src/main/scala/org/encalmo/document/ExpressionToPrint.scala => printer/src/main/scala/org/encalmo/printer/expression/ExpressionToPrint.scala
rename : printer/src/test/scala/org/encalmo/printer/document/XslFoTextDocumentPrinterTest.scala => printer/src/test/scala/org/encalmo/printer/document/HtmlTextDocumentPrinterTest.scala
rename : printer/src/test/scala/org/encalmo/printer/expression/MathMLExpressionPrinterUnitTest.scala => printer/src/test/scala/org/encalmo/printer/expression/ExpressionToPrinteUnitTest.scala
calculation flow improvement part 2

--HG--
rename : printer/src/test/scala/org/encalmo/printer/expression/ExpressionToPrinteUnitTest.scala => printer/src/test/scala/org/encalmo/printer/expression/ExpressionToPrintUnitTest.scala
rename : structures/src/main/scala/org/encalmo/structures/eurocode/actions/Actions.scala => structures/src/main/scala/org/encalmo/structures/eurocode/actions/ActionsSymbols.scala
calculation flow improvement part 3

--HG--
rename : calculation/src/main/scala/org/encalmo/calculation/ExpressionResolver.scala => calculation/src/main/scala/org/encalmo/calculation/Context.scala
rename : calculation/src/main/scala/org/encalmo/calculation/Context.scala => calculation/src/main/scala/org/encalmo/calculation/ContextFactory.scala
rename : calculation/src/main/scala/org/encalmo/calculation/ExpressionResolverSeq.scala => calculation/src/main/scala/org/encalmo/calculation/ContextSeq.scala
rename : calculation/src/main/scala/org/encalmo/calculation/MutableExpressionResolverSeq.scala => calculation/src/main/scala/org/encalmo/calculation/MutableContextSeq.scala
rename : calculation/src/main/scala/org/encalmo/calculation/FormulaReckoner.scala => calculation/src/main/scala/org/encalmo/calculation/Reckoner.scala
rename : calculation/src/main/scala/org/encalmo/calculation/FormulaSetCache.scala => calculation/src/main/scala/org/encalmo/calculation/Results.scala
rename : calculation/src/test/scala/org/encalmo/calculation/FormulaReckonerUnitTest.scala => calculation/src/test/scala/org/encalmo/calculation/ReckonerUnitTest.scala