rename read functions which return a list of multiple expressions to 'parse'

src/load.c

@@ -18,7 +18,7 @@ pic_load(pic_state *pic, const char *fn)
     pic_error(pic, "load: could not read file");
   }
 
-  exprs = pic_read_file(pic, file);
+  exprs = pic_parse_file(pic, file);
   if (pic_undef_p(exprs)) {
     pic_error(pic, "load: unexpected EOF");
   }

src/macro.c

@@ -627,7 +627,7 @@ pic_macro_include(pic_state *pic)
     if (file == NULL) {
       pic_error(pic, "could not open file");
     }
-    exprs = pic_read_file(pic, file);
+    exprs = pic_parse_file(pic, file);
     if (pic_undef_p(exprs)) {
       pic_error(pic, "parse error");
     }

src/read.c

@@ -216,7 +216,7 @@ pic_read(pic_state *pic, const char *cstr)
 }
 
 pic_list
-pic_read_file(pic_state *pic, FILE *file)
+pic_parse_file(pic_state *pic, FILE *file)
 {
   yyscan_t scanner;
   struct parser_control ctrl;
@@ -234,7 +234,7 @@ pic_read_file(pic_state *pic, FILE *file)
 }
 
 pic_list
-pic_read_cstr(pic_state *pic, const char *cstr)
+pic_parse_cstr(pic_state *pic, const char *cstr)
 {
   yyscan_t scanner;
   struct parser_control ctrl;