Add bytecodevtab subspec

Author: Kudo

README.markdown

@@ -17,6 +17,7 @@ To use SQLite in your project, add `pod 'sqlite3'` to your Podfile. However, as
 ## Subspecs
 
 - [API Armor, detects API misuse during development](https://sqlite.org/compile.html#enable_api_armor): `pod 'sqlite3/api_armor'`
+- [Bytecode() And Tables_Used() Table-Valued Functions](https://www.sqlite.org/bytecodevtab.html): `pod 'sqlite3/bytecodevtab'`
 - [Column Metadata Access](https://sqlite.org/compile.html#enable_column_metadata): `pod 'sqlite3/coldata'`
 - [Full-Text-Search (FTS3/4)](https://www.sqlite.org/fts3.html): `pod 'sqlite3/fts'`
 - [Full-Text-Search (FTS5)](https://www.sqlite.org/fts5.html): `pod 'sqlite3/fts5'`

sqlite3.podspec

@@ -41,6 +41,12 @@ CMD
     ss.pod_target_xcconfig = { 'OTHER_CFLAGS' => '$(inherited) -DSQLITE_ENABLE_API_ARMOR=1' }
   end
 
+  # Enable bytecode() and tables_used() table-valued functions
+  s.subspec 'bytecodevtab' do |ss|
+    ss.dependency 'sqlite3/common'
+    ss.pod_target_xcconfig = { 'OTHER_CFLAGS' => '$(inherited) -DSQLITE_ENABLE_BYTECODE_VTAB=1' }
+  end
+
   # API for column meta-data access
   s.subspec 'coldata' do |ss|
     ss.dependency 'sqlite3/common'