Catch up omnios-userland mpc/mpfr/gmp for gcc51 with reality.
Update entire & omnios-userland with transitional gcc4->5 runtimes.
Other packages up to gcc51 runtime
gcc51 bringup

*** 19,32 ****
  depend fmri=developer/dtrace/toolkit@0.99,5.11-@PVER@ type=incorporate
  depend fmri=developer/gcc44@4.4.4,5.11-@PVER@ type=incorporate
  depend fmri=developer/gcc44/libgmp-gcc44@5.0.2,5.11-@PVER@ type=incorporate
  depend fmri=developer/gcc44/libmpc-gcc44@0.8.2,5.11-@PVER@ type=incorporate
  depend fmri=developer/gcc44/libmpfr-gcc44@3.1.0,5.11-@PVER@ type=incorporate
! depend fmri=developer/gcc48@4.8.1,5.11-@PVER@ type=incorporate
! depend fmri=developer/gcc48/libgmp-gcc48@5.0.5,5.11-@PVER@ type=incorporate
! depend fmri=developer/gcc48/libmpc-gcc48@1.0.1,5.11-@PVER@ type=incorporate
! depend fmri=developer/gcc48/libmpfr-gcc48@3.1.1,5.11-@PVER@ type=incorporate
  depend fmri=developer/gnu-binutils@2.25,5.11-@PVER@ type=incorporate
  depend fmri=developer/lexer/flex@2.5.39,5.11-@PVER@ type=incorporate
  depend fmri=developer/macro/cpp@0.5.11,5.11-@PVER@ type=incorporate
  depend fmri=developer/macro/gnu-m4@1.4.17,5.11-@PVER@ type=incorporate
  depend fmri=developer/parser/bison@3.0,5.11-@PVER@ type=incorporate
--- 19,32 ----
  depend fmri=developer/dtrace/toolkit@0.99,5.11-@PVER@ type=incorporate
  depend fmri=developer/gcc44@4.4.4,5.11-@PVER@ type=incorporate
  depend fmri=developer/gcc44/libgmp-gcc44@5.0.2,5.11-@PVER@ type=incorporate
  depend fmri=developer/gcc44/libmpc-gcc44@0.8.2,5.11-@PVER@ type=incorporate
  depend fmri=developer/gcc44/libmpfr-gcc44@3.1.0,5.11-@PVER@ type=incorporate
! depend fmri=developer/gcc51@5.1,5.11-@PVER@ type=incorporate
! depend fmri=developer/gcc51/libgmp-gcc51@6.0.0,5.11-@PVER@ type=incorporate
! depend fmri=developer/gcc51/libmpc-gcc51@1.0.3,5.11-@PVER@ type=incorporate
! depend fmri=developer/gcc51/libmpfr-gcc51@3.1.2,5.11-@PVER@ type=incorporate
  depend fmri=developer/gnu-binutils@2.25,5.11-@PVER@ type=incorporate
  depend fmri=developer/lexer/flex@2.5.39,5.11-@PVER@ type=incorporate
  depend fmri=developer/macro/cpp@0.5.11,5.11-@PVER@ type=incorporate
  depend fmri=developer/macro/gnu-m4@1.4.17,5.11-@PVER@ type=incorporate
  depend fmri=developer/parser/bison@3.0,5.11-@PVER@ type=incorporate
*** 107,116 ****
--- 107,118 ----
  depend fmri=system/library/boot-management@0.5.11,5.11-@PVER@ type=incorporate
  depend fmri=system/library/c++/sunpro@0.5.11,5.11-@PVER@ type=incorporate
  depend fmri=system/library/dbus@1.6.8,5.11-@PVER@ type=incorporate
  depend fmri=system/library/g++-4-runtime@4.8.1,5.11-@PVER@ type=incorporate
  depend fmri=system/library/gcc-4-runtime@4.8.1,5.11-@PVER@ type=incorporate
+ depend fmri=system/library/g++-5-runtime@5.1,5.11-@PVER@ type=incorporate
+ depend fmri=system/library/gcc-5-runtime@5.1,5.11-@PVER@ type=incorporate
  depend fmri=system/library/iconv/unicode@0.5.11,5.11-@PVER@ type=incorporate
  depend fmri=system/library/iconv/utf-8@0.5.11,5.11-@PVER@ type=incorporate
  depend fmri=system/library/iconv/utf-8/manual@0.5.11,5.11-@PVER@ type=incorporate
  depend fmri=system/library/iconv/xsh4/latin@0.5.11,5.11-@PVER@ type=incorporate
  depend fmri=system/library/install@0.5.11,5.11-@PVER@ type=incorporate