[compiler-rt] PATCH: Add -fno-lto to OSLDFLAGS for Linux

[H.J. Lu]

Add -fno-lto to OSLDFLAGS for Linux to support build for i386-linux target
on x86-64 machine, using

$ CC="gcc -m32" CXX="g++ -m32" cmake ...

with GCC 4.9 or newer, which pass -plugin to linker by default.  Otherwise,
we get

/usr/local32/bin/ld:
/usr/libexec/gcc/x86_64-redhat-linux/4.9.2/liblto_plugin.so: error
loading plugin:
/usr/libexec/gcc/x86_64-redhat-linux/4.9.2/liblto_plugin.so: wrong ELF
class: ELFCLASS64

during

$ PATH=/usr/local32/bin:$PATH CC="gcc -m32" CXX="g++ -m32" cmake ...
--target check-all

when i386 linker is used to work with i386 clang for LTO.

-- 
H.J.
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