Fix "make tags" command (#1337)

Backport enhancements from master, commits:

* 9c4bfa6669e220efdd379b9f8e7db32bb4e25e72: "make tags": remove -t
  option of ctags. The option was kept for backward compatibility,
  but it was completly removed recently. Patch written by Stéphane
  Wirtel.
* cf0ac6a71ae51249a05521f49c1a0fabbb948488: Fix "make tags": set
  locale to C to call sort
* 8a543c0bc7347d5b333f334d157bf4a7cd33c14a: `make tags` fixes (GH-717)
diff --git a/configure b/configure
index 40549d0..35fbeac 100755
--- a/configure
+++ b/configure
@@ -15028,7 +15028,7 @@
 done
 
 
-SRCDIRS="Parser Grammar Objects Python Modules Mac"
+SRCDIRS="Parser Objects Python Modules"
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for build directories" >&5
 $as_echo_n "checking for build directories... " >&6; }
 for dir in $SRCDIRS; do