x11-libs/fltk: add AR autodetection with tuple prefix

Package-Manager: Portage-2.3.103, Repoman-2.3.23
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>

x11-libs/fltk/files/fltk-1.3.5-AR.patch

@@ -0,0 +1,11 @@
+--- a/configure.ac
++++ b/configure.ac
+@@ -430,7 +430,7 @@ AC_PATH_PROG(DOXYDOC,doxygen)
+ 
+ dnl How do we make libraries?
+ AC_PROG_RANLIB
+-AC_PATH_TOOL(AR, ar)
++AC_CHECK_TOOL(AR, ar)
+ 
+ if test "x$AR" = "x:"; then
+     AC_MSG_ERROR([Configure could not find the library archiver, aborting.])

x11-libs/fltk/fltk-1.3.5-r4.ebuild

@@ -66,6 +66,7 @@ PATCHES=(
 	"${FILESDIR}"/${PN}-1.3.4-conf-tests.patch
 	"${FILESDIR}"/${PN}-1.3.5-cmake.patch
 	"${FILESDIR}"/${PN}-1.3.5-optim.patch
+	"${FILESDIR}"/${PN}-1.3.5-AR.patch
 )
 
 src_prepare() {