NOTE: From now on Boost is required in order to compile IfcOpenShell

====================================================================

- Use boost::optional for optional IFC arguments
- Use boost::uuid for the creation of GlobalIds
- New IfcGeomObjects setting to force alignment of TopoDS_Face normal to CCW orientation
- Removed static Ifc class, renamed to non-static IfcFile. IfcFile renamed to IfcSpfStream
- Introduced Logger class
- Introduced EntityBuffer class that keeps track of all writable entities created to add them all in once to the IfcFile class

src/ifcparse/IfcCharacterDecoder.cpp

@@ -1,4 +1,4 @@
-/********************************************************************************
+/********************************************************************************
  *                                                                              *
  * This file is part of IfcOpenShell.                                           *
  *                                                                              *
@@ -87,7 +87,7 @@ void IfcCharacterDecoder::addChar(std::stringstream& s,const UChar32& ch) {
 	s.put(substitution_character);
 #endif
 }
-IfcCharacterDecoder::IfcCharacterDecoder(IfcParse::File* f) {
+IfcCharacterDecoder::IfcCharacterDecoder(IfcParse::IfcSpfStream* f) {
   file = f;
 #ifdef HAVE_ICU
   if (destination) ucnv_close(destination);