Scrub Exile/Avernum/Nethergate graphics

- New space-filling forcecage (possibly not finalized)
- New appearance for pushable stone block
- New red slime monster graphic by ADoS
- Six new item graphics by ADoS
- New bookshelf terrain by ADoS

src/tools/graphtool.cpp

@@ -733,15 +733,6 @@ extern const std::vector<m_pic_index_t> m_pic_index = {
 	{196, 1, 1},
 	{197, 1, 1},
 	{198, 1, 1},
-	{0, 1, 1},
-	{45, 1, 1},
-	{199, 1, 1},
-	{200, 1, 1},
-	{201, 1, 1},
-	{202, 1, 1},
-	{203, 1, 1},
-	//180
-	{204, 1, 1},
 };
 
 // TODO: Put these classes in a header?

src/tools/graphtool.hpp

@@ -21,8 +21,8 @@
 namespace fs = boost::filesystem;
 
 #define LINES_IN_TEXT_WIN	11
-#define NUM_TER_SHEETS		19
-#define NUM_MONST_SHEETS	11
+#define NUM_TER_SHEETS		5
+#define NUM_MONST_SHEETS	10
 
 struct m_pic_index_t {
 	unsigned char i, x, y;