Update gcode.c #3
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added a t_encountered flag to gc_execute_line.
This allows for a check before updating gc_state.tool as without this check, gc_state.tool was always updated with all modal changes regardless of if the user passed a T command or not. Previous behavior:
$G> [GC:G0 G54 G17 G21 G90 G94 M5 M9 T0 F0 S0]
T4> [GC:G0 G54 G17 G21 G90 G94 M5 M9 T4 F0 S0]
G91> [GC:G0 G54 G17 G21 G91 G94 M5 M9 T0 F0 S0]
New behavior:
$G> [GC:G0 G54 G17 G21 G90 G94 M5 M9 T0 F0 S0]
T4> [GC:G0 G54 G17 G21 G90 G94 M5 M9 T4 F0 S0]
G91> [GC:G0 G54 G17 G21 G91 G94 M5 M9 T4 F0 S0]