Minor tweaks to xz and libiberty builds

Summary:
X-link: facebookincubator/zstrong#1145

This diff contains a few changes to the xz and libiberty getdeps builds that are required
in order for folly to build as a shared library, which in turn is needed for folly's Python
extensions to build correctly.

Reviewed By: hyuen

Differential Revision: D68252093

fbshipit-source-id: 036bc4a0e7bf9a11f0a4aa6ec0014f7935afbb5b

build/fbcode_builder/manifests/libiberty

@@ -9,19 +9,18 @@ binutils
 binutils-dev
 
 [download]
-url = https://ftp.gnu.org/gnu/binutils/binutils-2.42.tar.xz
-sha256 = f6e4d41fd5fc778b06b7891457b3620da5ecea1006c6a4a41ae998109f85a800
+url = https://ftp.gnu.org/gnu/binutils/binutils-2.43.tar.xz
+sha256 = b53606f443ac8f01d1d5fc9c39497f2af322d99e14cea5c0b4b124d630379365
 
 [dependencies]
 zlib
 
 [build]
 builder = autoconf
-subdir = binutils-2.42/libiberty
+subdir = binutils-2.43/libiberty
+patchfile = libiberty_install_pic_lib.patch
 
 # only build the parts needed for demangling
 # as we still want to use system linker and assembler etc
 [autoconf.args]
---disable-shared
---disable-testsuite
 --enable-install-libiberty

build/fbcode_builder/manifests/xz

@@ -18,6 +18,3 @@ sha256 = f6f4910fd033078738bd82bfba4f49219d03b17eb0794eb91efbae419f4aba10
 [build]
 builder = autoconf
 subdir = xz-5.2.5
-
-[autoconf.args]
---disable-shared

build/fbcode_builder/patches/libiberty_install_pic_lib.patch

@@ -0,0 +1,13 @@
+diff --git a/Makefile.in b/Makefile.in
+index b77a41c..cbe71fe 100644
+--- a/Makefile.in
++++ b/Makefile.in
+@@ -389,7 +389,7 @@ MULTIOSDIR = `$(CC) $(CFLAGS) -print-multi-os-directory`
+ install_to_libdir: all
+        if test -n "${target_header_dir}"; then \
+                ${mkinstalldirs} $(DESTDIR)$(libdir)/$(MULTIOSDIR); \
+-               $(INSTALL_DATA) $(TARGETLIB) $(DESTDIR)$(libdir)/$(MULTIOSDIR)/$(TARGETLIB)n; \
++               $(INSTALL_DATA) pic/$(TARGETLIB) $(DESTDIR)$(libdir)/$(MULTIOSDIR)/$(TARGETLIB)n; \
+                ( cd $(DESTDIR)$(libdir)/$(MULTIOSDIR) ; chmod 644 $(TARGETLIB)n ;$(RANLIB) $(TARGETLIB)n ); \
+                mv -f $(DESTDIR)$(libdir)/$(MULTIOSDIR)/$(TARGETLIB)n $(DESTDIR)$(libdir)/$(MULTIOSDIR)/$(TARGETLIB); \
+                case "${target_header_dir}" in \