Add pcre2 dependency and disable built-in pcre.

.SRCINFO

@@ -1,8 +1,8 @@
 # Generated by mksrcinfo v8
-# Mon Dec 14 22:08:01 UTC 2015
+# Sun Apr 17 17:58:34 UTC 2016
 pkgbase = fish-git
 	pkgdesc = User friendly shell intended mostly for interactive use.
-	pkgver = 2.2.0.r459.gf045d9b
+	pkgver = 2.2.0.r775.gf034d8b
 	pkgrel = 1
 	epoch = 2
 	url = http://fishshell.com
@@ -18,6 +18,7 @@ pkgbase = fish-git
 	makedepends = git
 	makedepends = ncurses
 	depends = bc
+	depends = pcre2
 	optdepends = python: fish_update_completions and other tools
 	optdepends = pkgfile: for command-not-found handler
 	provides = fish