- fix compilation issue on psp

- attempt at reducing loading times on the PSP: I merged a few graphics files together, removed some unused calls from the initialization functions, and moved some other ones to have a more lazy approach. The PSP version remains fairly slow in some parts (especially loading, but also entering the shop, or starting a new game), so I will try to reduce file access as much as possible in the days to come. Not a release blocker IMO though, but I4d sure love if it were faster.
- uppercased "Track1.mp3" to be in line with the actual filename. Most likely this had been broken forever on case-sensitive OSes
- I removed costly calls from the textscroller. I believe it wasn't very useful in its previous state. Now it's only "advertising" for unlockable stuff, which I think is ok (and allows to refresh it every time the menu is loaded)
- As a counterpart, added a "% complete" progress bar in the menu, something I wanted to add a while ago.

JGE/src/zipFS/zfsystem.cpp

@@ -289,9 +289,10 @@ void filesystem::InsertZip(const char * Filename, const size_t PackID)
 	string ZipPath = m_BasePath + Filename;
 
 	// Open zip
-	ifstream File(ZipPath.c_str(), ios::binary);
-
     LOG(("opening zip:" + ZipPath).c_str());
+    ifstream File(ZipPath.c_str(), ios::binary);
+
+
 
 	if (! File)
 		return;
@@ -331,6 +332,8 @@ void filesystem::InsertZip(const char * Filename, const size_t PackID)
 	// Add zip file to Zips data base (only if not empty)
 	if (ZipInfo.m_NbEntries != 0)
 		m_Zips[PackID] = ZipInfo;
+
+    LOG("--zip file loading DONE");
 }