contrib: Update & reactivate sqlite

contrib/src/sqlite/SHA512SUMS

-fd6761a6c8f76d137cc8c98b8ae77f8f4206dbf187d66e324f7dc6a79eb752d441446139216eadb534cf5601345c2ea1da3312305e24c762b6e16318cf4adb5e  sqlite-3.6.20.tar.gz
+eaec866de26003ec36559aab15dd18dc0e6029453002a4eec5e176bb35a712b8b06c235436e6c1a226b67c7eb90d7a26c2b3b3d9a5e6e92a5af485236b77c878  sqlite-autoconf-3240000.tar.gz

contrib/src/sqlite/rules.mak

 # sqlite
 
-SQLITE_VERSION := 3.6.20
-SQLITE_URL := http://www.sqlite.org/sqlite-amalgamation-$(SQLITE_VERSION).tar.gz
+SQLITE_VERSION := 3240000
+SQLITE_URL := https://www.sqlite.org/2018/sqlite-autoconf-$(SQLITE_VERSION).tar.gz
 
-# PKGS += sqlite
+PKGS += sqlite
 
 ifeq ($(call need_pkg,"sqlite3"),)
 PKGS_FOUND += sqlite
 endif
 
-$(TARBALLS)/sqlite-$(SQLITE_VERSION).tar.gz:
+$(TARBALLS)/sqlite-autoconf-$(SQLITE_VERSION).tar.gz:
 	$(call download_pkg,$(SQLITE_URL),sqlite)
 
-.sum-sqlite: sqlite-$(SQLITE_VERSION).tar.gz
+.sum-sqlite: sqlite-autoconf-$(SQLITE_VERSION).tar.gz
 
-sqlite: sqlite-$(SQLITE_VERSION).tar.gz .sum-sqlite
+sqlite: sqlite-autoconf-$(SQLITE_VERSION).tar.gz .sum-sqlite
 	$(UNPACK)
+	$(call pkg_static, "sqlite3.pc.in")
 	$(MOVE)
 
 .sqlite: sqlite