patch 9.1.1624: Cscope not enabled on MacOS

Problem:  Cscope not enabled on MacOS
Solution: Remove #ifdef test for MacOS and always enable FEAT_CSCOPE on
          Unix (Damien Lejay).

Remove the !MACOS_X guard from FEAT_CSCOPE in feature.h. macOS has been a
certified UNIX since 10.5 and supports cscope without issues. This guard
originated in the pre-OS X era when Classic MacOS lacked the required
POSIX APIs. MacVim already ships with +cscope successfully.

closes: #17976

Signed-off-by: Damien Lejay <[email protected]>
Signed-off-by: Christian Brabandt <[email protected]>

Author: dlejay

src/feature.h

@@ -236,7 +236,7 @@
 /*
  * +cscope		Unix only: Cscope support.
  */
-#if defined(UNIX) && defined(FEAT_HUGE) && defined(ENABLE_CSCOPE) && !defined(MACOS_X)
+#if defined(UNIX) && defined(FEAT_HUGE) && defined(ENABLE_CSCOPE)
 # define FEAT_CSCOPE
 #endif
 

src/version.c

@@ -719,6 +719,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1624,
 /**/
     1623,
 /**/