Add test for LTRIM

Also remove deprecation warning un runner

Author: boriel

tests/runtime/cases/ltrim_test.bas

@@ -0,0 +1,19 @@
+#include "lib/tst_framework.bas"
+
+INIT("Test LTRIM$()")
+
+#include <string.bas>
+#include <alloc.bas>
+
+print memavail; chr$(13); maxavail
+
+print "'"; ltrim("", "a"); "'"
+print "'"; ltrim("hello world", ""); "'"
+print "'"; ltrim("hello world", "he"); "'"
+print "'"; ltrim("hehello world", "he"); "'"
+print "'"; ltrim("hehehe", "he"); "'"
+
+print memavail; chr$(13); maxavail
+
+FINISH
+

tests/runtime/expected/ltrim_test.tzx.scr

@@ -4,6 +4,6 @@
 RUN=$(basename -s .bas $1)
 rm -f "$RUN.tzx"
 killall fuse 2>/dev/null
-../../zxb.py -TaB $1 --debug-memory || exit 1
+../../zxbc.py -TaB $1 --debug-memory || exit 1
 fuse --auto-load --speed=19000 "$RUN.tzx" &