Fixed crash if initialization of EGL failed but was tried again later.

The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly
uninitialized data structure if loading the library first failed. A later try to
use EGL then skipped initialization and assumed it was previously successful
because the data structure now already existed. This led to at least one crash
in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was
dereferenced to make a call to eglBindAPI().

docs/README-psp.md

@@ -0,0 +1,19 @@
+PSP
+======
+SDL port for the Sony PSP contributed by 
+   Captian Lex 
+
+Credit to
+   Marcus R.Brown,Jim Paris,Matthew H for the original SDL 1.2 for PSP
+   Geecko for his PSP GU lib "Glib2d"
+
+Building
+--------
+To build for the PSP, make sure psp-config is in the path and run:
+   make -f Makefile.psp
+
+
+
+To Do
+------
+PSP Screen Keyboard