IfcParse dynamic linking, IFCPARSE_NO_REGEX, fixes for three memory leaks (#76)

* CMake: moved setting link directories before all the projects.

* Added IfcParse_Export header for declaring export macro.

* Added IFCPARSE_STATIC_DEFINE macro to all projects.

* Added include for export macro to swig file.

* Added IfcParse_EXPORT macro for all classes in headers generated by express parser.

* Allow removing boost.regex dependency by defining macro IFCPARSE_NO_REGEX.

* Fixed bug in deletion of ICU converter.

* Added export macro to most of the classes across headers

* Fixed memory leak: delete nested IfcAbstractEntity in EntityArgument.

* Fixed memory leak in destructor of IfcWritableEntity (args values).

cmake/CMakeLists.txt

@@ -408,6 +408,13 @@ if(NOT Boost_VERSION LESS 105800)
     add_definitions(-DBOOST_OPTIONAL_USE_OLD_DEFINITION_OF_NONE)
 endif()
 
+LINK_DIRECTORIES(${LINK_DIRECTORIES} ${IfcOpenShell_BINARY_DIR} ${OCC_LIBRARY_DIR} ${OPENCOLLADA_LIBRARY_DIR}
+	${ICU_LIBRARY_DIR} ${Boost_LIBRARY_DIRS}
+)
+if(NOT WIN32)
+	LINK_DIRECTORIES(${LINK_DIRECTORIES} /usr/lib /usr/lib64 /usr/local/lib /usr/local/lib64)
+endif()
+
 # IfcParse
 file(GLOB IFCPARSE_H_FILES ../src/ifcparse/*.h)
 file(GLOB IFCPARSE_CPP_FILES ../src/ifcparse/*.cpp)
@@ -422,6 +429,9 @@ endforeach()
 
 set(IFCPARSE_FILES ${IFCPARSE_CPP_FILES} ${IFCPARSE_H_FILES})
 
+# add macro for every project: use IfcParse as static lib
+add_definitions(-DIFCPARSE_STATIC_DEFINE)
+
 ADD_LIBRARY(IfcParse STATIC ${IFCPARSE_FILES})
 
 IF(UNICODE_SUPPORT)
@@ -445,13 +455,6 @@ ENDIF()
 
 TARGET_LINK_LIBRARIES(IfcGeom IfcParse)
 
-LINK_DIRECTORIES(${LINK_DIRECTORIES} ${IfcOpenShell_BINARY_DIR} ${OCC_LIBRARY_DIR} ${OPENCOLLADA_LIBRARY_DIR}
-	${ICU_LIBRARY_DIR} ${Boost_LIBRARY_DIRS}
-)
-if(NOT WIN32)
-	LINK_DIRECTORIES(${LINK_DIRECTORIES} /usr/lib /usr/lib64 /usr/local/lib /usr/local/lib64)
-endif()
-
 # IfcConvert
 if (IFCCONVERT_DOUBLE_PRECISION)
     add_definitions(-DIFCCONVERT_DOUBLE_PRECISION)