PatR ad838c7e79 fix #H4041 - implicit declaration of has_colors() ...

_M_UNIX (SCO UNIX) and __linux__ (all flavors of linux?) both call
has_colors() for TTY_GRAPHICS+TEXTCOLOR configuration, but neither
declared it.  The new declaration is just a guess based on usage.

2015-12-23 16:25:06 -08:00

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