patch 9.1.0544: filetype: ldapconf files are not recognized

Problem:  filetype: ldapconf files are not recognized
Solution: Detect '.ldaprc', 'ldap.conf' and 'ldaprc' files as ldapconf
          filetype, include a simple ldapconf ftplugin file
          (Riley Bruins)

[Specification](https://www.openldap.org/software//man.cgi?query=ldap.conf&sektion=5&apropos=0&manpath=OpenLDAP+2.4-Release)

closes: #15176

Signed-off-by: Riley Bruins <ribru17@hotmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

.github/MAINTAINERS

@@ -187,6 +187,7 @@ runtime/ftplugin/kconfig.vim		@chrisbra
 runtime/ftplugin/kdl.vim		@imsnif @jiangyinzuo
 runtime/ftplugin/kivy.vim		@ribru17
 runtime/ftplugin/kotlin.vim		@udalov
+runtime/ftplugin/ldapconf.vim		@ribru17
 runtime/ftplugin/less.vim		@genoma
 runtime/ftplugin/lex.vim		@ribru17
 runtime/ftplugin/liquid.vim		@tpope

runtime/filetype.vim

@@ -1250,6 +1250,9 @@ au BufNewFile,BufRead */etc/limits,*/etc/*limits.conf,*/etc/*limits.d/*.conf	set
 " LambdaProlog or SML (see dist#ft#FTmod for *.mod)
 au BufNewFile,BufRead *.sig			call dist#ft#FTsig()
 
+" LDAP configuration
+au BufNewFile,BufRead ldaprc,.ldaprc,ldap.conf	setf ldapconf
+
 " LDAP LDIF
 au BufNewFile,BufRead *.ldif			setf ldif
 

runtime/ftplugin/ldapconf.vim

@@ -0,0 +1,13 @@
+" Vim filetype plugin
+" Language:	ldap.conf(5) configuration file.
+" Maintainer:	Riley Bruins <ribru17@gmail.com>
+" Last Change:	2024 Jul 06
+
+if exists('b:did_ftplugin')
+  finish
+endif
+let b:did_ftplugin = 1
+
+setl comments=:# commentstring=#\ %s
+
+let b:undo_ftplugin = 'setl com< cms<'

src/testdir/test_filetype.vim

@@ -385,6 +385,7 @@ def s:GetFilenameChecks(): dict<list<string>>
     lace: ['file.ace', 'file.ACE'],
     latte: ['file.latte', 'file.lte'],
     ld: ['file.ld', 'any/usr/lib/aarch64-xilinx-linux/ldscripts/aarch64elf32b.x'],
+    ldapconf: ['ldap.conf', '.ldaprc', 'ldaprc'],
     ldif: ['file.ldif'],
     lean: ['file.lean'],
     ledger: ['file.ldg', 'file.ledger', 'file.journal'],

src/version.c

@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    544,
 /**/
     543,
 /**/