move some utility functions inside octave namespace * lo-utils.h, lo-utils.cc (is_one_or_zero): Rename from xis_one_or_zero and move inside octave namespace. Change all uses. (is_zero): Rename from xis_zero and move inside octave namespace. Change all uses. (is_int_or_inf_or_nan): Rename from xis_int_or_inf_or_nan and move inside octave namespace. Change all uses. (too_large_for_float): Rename from xtoo_large_for_float and move inside octave namespace. Change all uses. (too_large_for_float): Rename from xtoo_large_for_float and move inside octave namespace. Change all uses. (is_int_or_inf_or_nan): Rename from xis_int_or_inf_or_nan and move inside octave namespace. Change all uses. (fgets): Rename from octave_fgets and move inside octave namespace. Change all uses. (fgetl): Rename from octave_fgetl and move inside octave namespace. Change all uses. (any_all_test, strsave): Move inside octave namespace. Tag uses with octave:: prefix as needed. * lo-utils.h: Provide deprecated templates and inline functions to preserve old names in global namespace.

--- a/libinterp/corefcn/input.cc	Thu Mar 17 10:50:22 2016 +0530
+++ b/libinterp/corefcn/input.cc	Tue Aug 03 12:34:52 2021 -0400
@@ -1045,7 +1045,7 @@
 
     eof = false;
 
-    std::string src_str = octave_fgets (m_file, eof);
+    std::string src_str = fgets (m_file, eof);
 
     std::string mfile_encoding;