Add first version of the planned progress feedback API to the public Cpp API. Currently, progress reporting is done between each major import stage.

Fix various issues with the vc9 solution and assimp_cmd.
Declare some more Importer methods const. This marks them as safe to use from within a progress callback.

git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@806 67173fc5-114c-0410-ac8e-9d2fd5bffc1f

code/BaseImporter.cpp

@@ -52,6 +52,7 @@ using namespace Assimp;
 // ------------------------------------------------------------------------------------------------
 // Constructor to be privately used by Importer
 BaseImporter::BaseImporter()
+: progress()
 {
 	// nothing to do here
 }
@@ -65,9 +66,15 @@ BaseImporter::~BaseImporter()
 
 // ------------------------------------------------------------------------------------------------
 // Imports the given file and returns the imported data.
-aiScene* BaseImporter::ReadFile( const std::string& pFile, IOSystem* pIOHandler)
+aiScene* BaseImporter::ReadFile(const Importer* pImp, const std::string& pFile, IOSystem* pIOHandler)
 {
-	// Construct a file system filter to improve our success ratio reading external files
+	progress = pImp->GetProgressHandler();
+	ai_assert(progress);
+
+	// Gather configuration properties for this run
+	SetupProperties( pImp );
+
+	// Construct a file system filter to improve our success ratio at reading external files
 	FileSystemFilter filter(pFile,pIOHandler);
 
 	// create a scene object to hold the data