libxml2: upgrade to version 2.9.3

- drop libxml2-freebsd.patch.1 (upstream libtool 2.4.6 does the same)
- drop libxml2-vc15.patch (fixed upstream)

Change-Id: Ia2f194f39efebd3d2ea924d23a5543ac53e93116
Reviewed-on: https://gerrit.libreoffice.org/20084Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Michael Stahl <mstahl@redhat.com>
(cherry picked from commit 391bcf34)
Reviewed-on: https://gerrit.libreoffice.org/20095Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>

download.lst

@@ -96,7 +96,7 @@ export LIBGLTF_MD5SUM := d63a9f47ab048f5009d90693d6aa6424
 export LIBGLTF_TARBALL := libgltf-0.0.2.tar.bz2
 export LIBLANGTAG_TARBALL := 36271d3fa0d9dec1632029b6d7aac925-liblangtag-0.5.1.tar.bz2
 export LIBXMLSEC_TARBALL := 1f24ab1d39f4a51faf22244c94a6203f-xmlsec1-1.2.14.tar.gz
-export LIBXML_TARBALL := 9c0cfef285d5c4a5c80d00904ddab380-libxml2-2.9.1.tar.gz
+export LIBXML_TARBALL := daece17e045f1c107610e137ab50c179-libxml2-2.9.3.tar.gz
 export LIBXSLT_TARBALL := 9667bf6f9310b957254fdcf6596600b7-libxslt-1.1.28.tar.gz
 export LPSOLVE_TARBALL := 26b3e95ddf3d9c077c480ea45874b3b8-lp_solve_5.5.tar.gz
 export MARIADB_TARBALL := a233181e03d3c307668b4c722d881661-mariadb_client-2.0.0-src.tar.gz

external/libxml2/ExternalPackage_xml2.mk

@@ -21,7 +21,7 @@ else # COM=MSC
 $(eval $(call gb_ExternalPackage_add_file,xml2,$(LIBO_URE_LIB_FOLDER)/libxml2.dll,win32/bin.msvc/libxml2.dll))
 endif
 else # OS!=WNT
-$(eval $(call gb_ExternalPackage_add_file,xml2,$(LIBO_URE_LIB_FOLDER)/libxml2.so.2,.libs/libxml2.so.2.9.1))
+$(eval $(call gb_ExternalPackage_add_file,xml2,$(LIBO_URE_LIB_FOLDER)/libxml2.so.2,.libs/libxml2.so.2.9.3))
 endif
 endif # DISABLE_DYNLOADING
 

external/libxml2/UnpackedTarball_xml2.mk

@@ -13,7 +13,6 @@ $(eval $(call gb_UnpackedTarball_set_tarball,xml2,$(LIBXML_TARBALL),,libxml2))
 
 $(eval $(call gb_UnpackedTarball_add_patches,xml2,\
 	external/libxml2/libxml2-config.patch.1 \
-	external/libxml2/libxml2-freebsd.patch.1 \
 	external/libxml2/libxml2-global-symbols.patch \
 	external/libxml2/libxml2-vc10.patch \
 	$(if $(filter ANDROID,$(OS)),external/libxml2/libxml2-android.patch) \

external/libxml2/libxml2-freebsd.patch.1

-Usual patch to produce Linux-like .so files on FreeBSD
-
---- a/ltmain.sh	2009-10-06 17:39:54.000000000 +0100
-+++ b/ltmain.sh	2009-12-17 11:43:56.000000000 +0000
-@@ -6271,8 +6271,8 @@
- 	  ;;
- 
- 	freebsd-elf)
--	  major=".$current"
--	  versuffix=".$current"
-+	  major=.`expr $current - $age`
-+	  versuffix=".$major.$age.$revision";
- 	  ;;
- 
- 	irix | nonstopux)

external/libxml2/libxml2-icu.patch.0

@@ -3,7 +3,7 @@ diff -up win32/Makefile.msvc.dt win32/Makefile.msvc
 +++ win32/Makefile.msvc	2014-07-18 19:01:39.347982929 +0200
 @@ -45,6 +45,7 @@ CPPFLAGS = $(CPPFLAGS) /D "_REENTRANT"
  CC = cl.exe
- CFLAGS = /nologo /D "WIN32" /D "_WINDOWS" /D "_MBCS" /D "HAVE_CONFIG_H" /D "NOLIBTOOL" /W1 $(CRUNTIME)
+ CFLAGS = /nologo /D "WIN32" /D "_WINDOWS" /D "_MBCS" /D "NOLIBTOOL" /W1 $(CRUNTIME)
  CFLAGS = $(CFLAGS) /I$(XML_SRCDIR) /I$(XML_SRCDIR)\include /I$(INCPREFIX)
 +CFLAGS = $(CFLAGS) /I$(WORKDIR)/UnpackedTarball/icu/source/i18n /I$(WORKDIR)/UnpackedTarball/icu/source/common
  !if "$(WITH_THREADS)" != "no"

external/libxml2/libxml2-vc10.patch

+Add SOLARINC, and disable SSE2 default for MSVC2012
+
 --- build/libxml2-2.7.6/win32/Makefile.msvc.old	2010-09-20 20:22:41.500000000 +0200
 +++ build/libxml2-2.7.6/win32/Makefile.msvc	2010-09-20 20:23:00.250000000 +0200
 @@ -59,6 +59,7 @@