mangen reports ~10 parsing errors

[akavel]

$ cd arcan/doc
$ ruby docgen.rb mangen
parsing error, end of file reached while processing (target_input.lua
 lastline: -- @cfunction: targetinput

parsing error, end of file reached while processing (stepframe_target.lua
 lastline: -- @cfunction: targetstepframe

parsing error, end of file reached while processing (restore_target.lua
 lastline: -- @cfunction: targetrestore

parsing error, end of file reached while processing (target_graphmode.lua
 lastline: --

parsing error, end of file reached while processing (target_seek.lua
 lastline: -- @cfunction: targetseek

parsing error, end of file reached while processing (image_surface_resolve_properties.lua
 lastline: -- @flags:

parsing error, end of file reached while processing (scale3d_model.lua
 lastline: -- @related: move3d_model, forward3d_model, step3d_model, strafe3d_model

parsing error, end of file reached while processing (strafe3d_model.lua
 lastline: -- @related: move3d_model, forward3d_model, step3d_model, scale3d_model

parsing error, end of file reached while processing (camtag_model.lua
 lastline: -- @flags:

parsing error, end of file reached while processing (benchmark_enable.lua
 lastline: -- @related: benchmark_data, benchmark_timestamp, benchmark_tracedata

parsing error, end of file reached while processing (set_led_rgb.lua
 lastline: -- will not dispatch until a non-buffered update is called.

parsing error, end of file reached while processing (vr_map_limb.lua
 lastline: -- @example: vrtest

<stdin>:2: error: unterminated #ifdef
<stdin>:2: error: unterminated #ifdef
<stdin>:2: error: unterminated #ifdef
<stdin>:2: error: unterminated #ifdef