getrusage.2, ptrace.2, stpcpy.3, stpncpy.3: srcfix: start new sentence on new source line

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

man2/getrusage.2

@@ -112,7 +112,8 @@ expressed in a
 structure (seconds plus microseconds).
 .TP
 .IR ru_maxrss " (since Linux 2.6.32)"
-This is the maximum resident set size used (in kilobytes). For
+This is the maximum resident set size used (in kilobytes).
+For
 .BR RUSAGE_CHILDREN ,
 this is the resident set size of the largest child, not the maximum
 resident set size of the process tree.

man2/ptrace.2

@@ -1442,7 +1442,8 @@ Since Linux 3.4,
 can be used instead of
 .BR PTRACE_ATTACH .
 .B PTRACE_SEIZE
-does not stop the attached process. If you need to stop
+does not stop the attached process.
+If you need to stop
 it after attach (or at any other time) without sending it any signals,
 use
 .B PTRACE_INTERRUPT

man3/stpcpy.3

@@ -64,7 +64,8 @@ returns a pointer to the \fBend\fP of the string
 \fIdest\fP (that is, the address of the terminating null byte)
 rather than the beginning.
 .SH CONFORMING TO
-This function was added to POSIX.1-2008. Before that, it was not part of
+This function was added to POSIX.1-2008.
+Before that, it was not part of
 the C or POSIX.1 standards, nor customary on UNIX systems, but was not a
 GNU invention either.
 Perhaps it came from MS-DOS.

man3/stpncpy.3

@@ -64,7 +64,8 @@ returns a pointer to the terminating null byte
 in \fIdest\fP, or, if \fIdest\fP is not null-terminated,
 \fIdest + n\fP.
 .SH CONFORMING TO
-This function was added to POSIX.1-2008. Before that, it was a GNU extension.
+This function was added to POSIX.1-2008.
+Before that, it was a GNU extension.
 .SH SEE ALSO
 .BR strncpy (3),
 .BR wcpncpy (3)