zlib: cleanup

Drop remove.ldconfig.call.patch, as it's easier to just set LDCONFIG=true.

Pass uname=GNU via the documented configure option instead of undocumented
environment variable.

Rename zlib-1.2.11/ to just zlib/ as we don't ship multiple versions.

Send ldflags-tests.patch upstream and update Upstream-Status.

(From OE-Core rev: 344090a549284d0a1af065ff4cc3038bff8ecfea)

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/zlib/zlib-1.2.11/remove.ldconfig.call.patch

@@ -1,21 +0,0 @@
-
-When /etc/ld.so.cache is writeable by user running bitbake then it creates invalid cache 
-(in my case libstdc++.so cannot be found after building zlib(-native) and I have to call 
-touch */libstdc++.so && /sbin/ldconfig to fix it.
-
-So remove ldconfig call from make install-libs
-
-Upstream-Status: Inappropriate [disable feature]
-
-Index: zlib-1.2.11/Makefile.in
-===================================================================
---- zlib-1.2.11.orig/Makefile.in
-+++ zlib-1.2.11/Makefile.in
-@@ -322,7 +322,6 @@ install-libs: $(LIBS)
- 	  rm -f $(DESTDIR)$(sharedlibdir)/$(SHAREDLIB) $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBM); \
- 	  ln -s $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir)/$(SHAREDLIB); \
- 	  ln -s $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBM); \
--	  ($(LDCONFIG) || true)  >/dev/null 2>&1; \
- 	fi
- 	rm -f $(DESTDIR)$(man3dir)/zlib.3
- 	cp $(SRCDIR)zlib.3 $(DESTDIR)$(man3dir)

meta/recipes-core/zlib/zlib/ldflags-tests.patch

@@ -1,7 +1,7 @@
 Obey LDFLAGS for tests
 
-Signed-off-by: Christopher Larson <chris_larson@mentor.com>
-Upstream-Status: Pending
+Upstream-Status: Submitted [https://github.com/madler/zlib/pull/409]
+Signed-off-by: Ross Burton <ross.burton@intel.com>
 
 --- zlib-1.2.8.orig/Makefile.in
 +++ zlib-1.2.8/Makefile.in

meta/recipes-core/zlib/zlib_1.2.11.bb

@@ -7,7 +7,6 @@ LICENSE = "Zlib"
 LIC_FILES_CHKSUM = "file://zlib.h;beginline=6;endline=23;md5=5377232268e952e9ef63bc555f7aa6c0"
 
 SRC_URI = "${SOURCEFORGE_MIRROR}/libpng/${BPN}/${PV}/${BPN}-${PV}.tar.xz \
-           file://remove.ldconfig.call.patch \
            file://Makefile-runtests.patch \
            file://ldflags-tests.patch \
            file://run-ptest \
@@ -24,7 +23,7 @@ RDEPENDS_${PN}-ptest += "make"
 inherit ptest
 
 do_configure() {
-	uname=GNU ./configure --prefix=${prefix} --shared --libdir=${libdir}
+	LDCONFIG=true ./configure --prefix=${prefix} --shared --libdir=${libdir} --uname=GNU
 }
 
 do_compile() {