package: codespell

* data/skeletons/glr2.cc, src/parse-gram.y: Fix spelling.

Makefile.am

@@ -140,9 +140,10 @@ gen-ChangeLog:
 	$(CC) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -o $@ -E $<
 
 .PHONY: codespell
+CODESPELL = codespell
 codespell:
 	$(AM_V_GEN) cd $(srcdir) \
-	&& codespell \
+	&& $(CODESPELL) \
 	     --regex "[\\w\\-'’\`]+\+*" \
 	     --ignore-words-list "ba,circularly,cloneable,copyable,define'd,dout,froms,iff,ifset,od,ois" \
 	     $$(git ls-files data doc lib src tests)

data/skeletons/glr2.cc

@@ -920,7 +920,7 @@ public:
     YY_IGNORE_NULL_DEREFERENCE_END
   }
 
-  // A magic number to check our pointer arithmetics is sane.
+  // A magic number to check our pointer arithmetic is sane.
   enum { MAGIC = 713705 };
   unsigned int magic_;]])[
 };
@@ -1312,7 +1312,7 @@ public:
     YY_IGNORE_NULL_DEREFERENCE_END
   }
 
-  // A magic number to check our pointer arithmetics is sane.
+  // A magic number to check our pointer arithmetic is sane.
   enum { MAGIC = 0xeff1cace };
   unsigned int magic_;]])[
 };
@@ -1440,7 +1440,7 @@ public:
     YYASSERT (this->magic_ == MAGIC);
     YYASSERT (this->is_state_ == false || this->is_state_ == true);
   }
-  // A magic number to check our pointer arithmetics is sane.
+  // A magic number to check our pointer arithmetic is sane.
   enum { MAGIC = 0xDEAD1ACC }; // 3735886540.
   const unsigned int magic_;]])[
 };
@@ -1605,7 +1605,7 @@ private:
     yyitems.reserve (yynewSize);
     const glr_stack_item *newbase = &yyitems[0];
 
-    // Adjust the pointers.  Perform raw pointer arithmetics, as there
+    // Adjust the pointers.  Perform raw pointer arithmetic, as there
     // is no reason for objects to be aligned on their size.
     const ptrdiff_t disp
       = reinterpret_cast<const char*> (newbase) - reinterpret_cast<const char*> (oldbase);

src/parse-gram.y

@@ -518,7 +518,7 @@ tag:
 // A non empty list of possibly tagged symbols for %nterm.
 //
 // Can easily be defined like symbol_decls but restricted to ID, but
-// using token_decls allows to reudce the number of rules, and also to
+// using token_decls allows to reduce the number of rules, and also to
 // make nicer error messages on "%nterm 'a'" or '%nterm FOO "foo"'.
 nterm_decls:
   token_decls