doc: Wrap C++ docstrings to 79 characters + newline (80 total). * besselj.cc, bitfcns.cc, cellfun.cc, data.cc, debug.cc, error.cc, file-io.cc, graphics.cc, input.cc, lu.cc, matrix_type.cc, nproc.cc, pr-output.cc, quadcc.cc, regexp.cc, schur.cc, sparse.cc, strfind.cc, strfns.cc, syscalls.cc, urlwrite.cc, variables.cc, __osmesa_print__.cc, audiodevinfo.cc, audioread.cc, ccolamd.cc, chol.cc, colamd.cc, convhulln.cc, qr.cc, symbfact.cc, ov-java.cc, ov-struct.cc, ov-usr-fcn.cc, pt-arg-list.cc: doc: Wrap C++ docstrings to 79 characters + newline (80 total).

--- a/libinterp/dldfcn/symbfact.cc	Sun Mar 27 15:50:01 2016 -0700
+++ b/libinterp/dldfcn/symbfact.cc	Sun Mar 27 20:39:19 2016 -0700
@@ -82,7 +82,8 @@
 \n\
 @table @var\n\
 @item count\n\
-The row counts of the Cholesky@tie{}factorization as determined by @var{typ}.\n\
+The row counts of the Cholesky@tie{}factorization as determined by\n\
+@var{typ}.\n\
 \n\
 @item h\n\
 The height of the elimination tree.\n\