K 10
svn:author
V 4
lidl
K 8
svn:date
V 27
2018-04-18T13:17:14.786926Z
K 7
svn:log
V 390
top: fix warnings from clang/gcc

Add includes for <curses.h> and <termcap.h> where necessary, and
rename a few internal functions to have a "top_" prefix to avoid
clashes with standard names from curses.h/termcap.h headers.

Top now compiles without warnings on both gcc and clang.

Reviewed by:	emaste, imp, jhb
MFC after:	3 days
Differential Revision:	https://reviews.freebsd.org/D15115

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