sendfile.2, wctrans.3, wctype.3, pipe.7, zic.8: Global fix: s/Non-/Non/

The tendency in English, as prescribed in style guides like
Chicago MoS, is towards removing hyphens after prefixes
like "non-" etc.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

man2/sendfile.2

@@ -108,7 +108,7 @@ is set appropriately.
 .SH ERRORS
 .TP
 .B EAGAIN
-Non-blocking I/O has been selected using
+Nonblocking I/O has been selected using
 .B O_NONBLOCK
 and the write would block.
 .TP

man3/wctrans.3

@@ -26,7 +26,7 @@ which can map a wide character to
 another wide character.
 Its nature is implementation-dependent, but the special
 value \fI(wctrans_t)\ 0\fP denotes an invalid mapping.
-Non-zero \fIwctrans_t\fP
+Nonzero \fIwctrans_t\fP
 values can be passed to the
 .BR towctrans (3)
 function to actually perform

man3/wctype.3

@@ -26,7 +26,7 @@ may not have.
 In other words, it represents a class of wide characters.
 This type's nature is implementation-dependent, but the special value
 \fI(wctype_t) 0\fP denotes an invalid property.
-Non-zero \fBwctype_t\fP values
+Nonzero \fBwctype_t\fP values
 can be passed to the
 .BR iswctype (3)
 function

man7/pipe.7

@@ -76,7 +76,7 @@ If a process attempts to write to a full pipe (see below), then
 .BR write (2)
 blocks until sufficient data has been read from the pipe
 to allow the write to complete.
-Non-blocking I/O is possible by using the
+Nonblocking I/O is possible by using the
 .BR fcntl (2)
 .B F_SETFL
 operation to enable the

man8/zic.8

@@ -98,7 +98,7 @@ to the end of the line the sharp character appears on.
 White space characters and sharp characters may be enclosed in double quotes
 (") if they're to be used as part of a field.
 Any line that is blank (after comment stripping) is ignored.
-Non-blank lines are expected to be of one of three types:
+Nonblank lines are expected to be of one of three types:
 rule lines, zone lines, and link lines.
 .PP
 A rule line has the form