LIB_DIR is now just 'lib' or 'lib64'
Replaced $(LIB_DIR) with $(TOP)/$(LIB_DIR), use LIB_DIR in install targets.
Patch by Hanno Böck.
diff --git a/configs/linux-osmesa b/configs/linux-osmesa
index 72408d4..cc1fbbd 100644
--- a/configs/linux-osmesa
+++ b/configs/linux-osmesa
@@ -21,5 +21,5 @@
 
 # Dependencies
 OSMESA_LIB_DEPS = -lm -lpthread
-GLU_LIB_DEPS = -L$(LIB_DIR) -l$(OSMESA_LIB)
+GLU_LIB_DEPS = -L$(TOP)/$(LIB_DIR) -l$(OSMESA_LIB)
 APP_LIB_DEPS = -lOSMesa -lGLU