Rename `MRB_{ENABLE,DISABLE}_` to `MRB_{USE,NO}_`; close #5163

|        Previous Name         |        New Name         |
|------------------------------|-------------------------|
| MRB_ENABLE_ALL_SYMBOLS       | MRB_USE_ALL_SYMBOLS     |
| MRB_ENABLE_SYMBOLL_ALL       | MRB_USE_ALL_SYMBOLS     |
| MRB_ENABLE_CXX_ABI           | MRB_USE_CXX_ABI         |
| MRB_ENABLE_CXX_EXCEPTION     | MRB_USE_CXX_EXCEPTION   |
| MRB_ENABLE_DEBUG_HOOK        | MRB_USE_DEBUG_HOOK      |
| MRB_DISABLE_DIRECT_THREADING | MRB_NO_DIRECT_THREADING |
| MRB_DISABLE_STDIO            | MRB_NO_STDIO            |
| ENABLE_LINENOISE             | MRB_USE_LINENOISE       |
| ENABLE_READLINE              | MRB_USE_READLINE        |
| DISABLE_MIRB_UNDERSCORE      | MRB_NO_MIRB_UNDERSCORE  |
| DISABLE_GEMS                 | MRB_NO_GEMS             |

* `MRB_ENABLE_SYMBOLL_ALL` seems to be a typo, so it is fixed.
* `MRB_` prefix is added to those without.
* The previous names can also be used for compatibility.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/state.c b/src/state.c
index aef9605bc..5da2675ac 100644
--- a/src/state.c
+++ b/src/state.c
@@ -77,7 +77,7 @@ mrb_open(void)
   return mrb;
 }
 
-#ifndef DISABLE_GEMS
+#ifndef MRB_NO_GEMS
 static void
 init_mrbgems(mrb_state *mrb, void *opaque)
 {
@@ -94,7 +94,7 @@ mrb_open_allocf(mrb_allocf f, void *ud)
     return NULL;
   }
 
-#ifndef DISABLE_GEMS
+#ifndef MRB_NO_GEMS
   if (mrb_core_init_protect(mrb, init_mrbgems, NULL)) {
     mrb_close(mrb);
     return NULL;