Add syntax files from upstream vim repository

syntax/sql.vim

@@ -0,0 +1,40 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'vim') == -1
+  
+" Vim syntax file loader
+" Language:    SQL
+" Maintainer:  David Fishburn <fishburn at ianywhere dot com>
+" Last Change: Thu Sep 15 2005 10:30:02 AM
+" Version:     1.0
+
+" Description: Checks for a:
+"                  buffer local variable,
+"                  global variable,
+"              If the above exist, it will source the type specified.
+"              If none exist, it will source the default sql.vim file.
+"
+" quit when a syntax file was already loaded
+if exists("b:current_syntax")
+    finish
+endif
+
+" Default to the standard Vim distribution file
+let filename = 'sqloracle'
+
+" Check for overrides.  Buffer variables have the highest priority.
+if exists("b:sql_type_override")
+    " Check the runtimepath to see if the file exists
+    if globpath(&runtimepath, 'syntax/'.b:sql_type_override.'.vim') != ''
+        let filename = b:sql_type_override
+    endif
+elseif exists("g:sql_type_default")
+    if globpath(&runtimepath, 'syntax/'.g:sql_type_default.'.vim') != ''
+        let filename = g:sql_type_default
+    endif
+endif
+
+" Source the appropriate file
+exec 'runtime syntax/'.filename.'.vim'
+
+" vim:sw=4:
+
+endif