put parser, lexer, and evaluator in namespace; interpreter now owns evaluator * oct-parse.in.yy, parse.h: Move parser classes to octave namespace. * lex.ll, lex.h: Move lexer classes to octave namespace. * pt-eval.h, pt-eval.cc: Move evaluator class to octave namespace. Don't define global current evaluator pointer here. * debug.cc, error.cc, input.cc, input.h, ls-mat-ascii.cc, pt-jit.cc, sighandlers.cc, utils.cc, variables.cc, ov-usr-fcn.cc, pt-assign.cc, pt-exp.h, pt-id.cc: Update for namespaces. * interpreter.cc, interpreter.h (current_evaluator): New global var. (interpreter::m_evaluator): New data member. (interpreter::~interpreter): Delete evaluator.

--- a/libinterp/corefcn/ls-mat-ascii.cc	Mon Aug 01 09:52:51 2016 -0700
+++ b/libinterp/corefcn/ls-mat-ascii.cc	Tue Jul 12 14:28:07 2016 -0400
@@ -255,7 +255,7 @@
         varname[i] = '_';
     }
 
-  if (is_keyword (varname) || ! isalpha (varname[0]))
+  if (octave::is_keyword (varname) || ! isalpha (varname[0]))
     varname.insert (0, "X");
 
   if (! valid_identifier (varname))