Added request at29487

1) New hookable Engine func: GetInfoKeyBuffer
2) New GameDLL func that can be called via engfunc: GetInfoKeyBuffer
3) New native: copy_infokey_buffer that copies data out of the specified info key buffer
4) EngFunc_InfoKeyValue, EngFunc_SetKeyValue, and EngFunc_SetClientKeyValue have been reworked
    so that they expect pointers to an info key buffer in order to work properly o_O
5) Added some error messages to get_tr

dlls/fakemeta/misc.cpp

@@ -0,0 +1,13 @@
+#include "fakemeta_amxx.h"
+
+static cell AMX_NATIVE_CALL copy_infokey_buffer(AMX *amx, cell *params)
+{
+	char *infobuffer = reinterpret_cast<char *>(params[1]);
+
+	return MF_SetAmxString(amx, params[2], infobuffer, params[3]);
+}
+
+AMX_NATIVE_INFO misc_natives[] = {
+	{ "copy_infokey_buffer",		copy_infokey_buffer },
+	{NULL,							NULL},
+};