Recommended update for gcc48

This update for gcc48 fixes the following issues:

- Fix internal compiler error specific to the ppc64le architecture. (bsc#976627)
- Fix issue with using gcov and #pragma pack. (bsc#977654)
- Fix internal compiler error when building samba on aarch64. (bsc#970009)
- Fix HTM built-ins on PowerPC. (bsc#955382)
- Build without GRAPHITE where cloog-isl is not available.

This update was imported from the SUSE:SLE-12:Update update project.

Fixed bugs
bnc#977654
L3: segfault in libgcov of programs built with --coverage and using #pragma pack
bnc#955382
HTM builtins aren't treated as compiler barriers on powerpc
bnc#970009
samba fails to build on aarch64
bnc#976627
g++ internal compiler error on ppc64le
Selected Binaries
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