crt: Need a position-independent CRT for PIE
- Implement the greatest possible part of the crt1 in C
- Implement SPARC versions of the ASM sections of crt1
- Build crt1 position-independently, minor ASM updates to be position
  independent
- Implement crt1 with the hook expected by modern GCC to support
  profiling, make gcrt1 a symlink for source compatibility (older GCC
  initializes profiling at firsnt use of _mcount if necessary, so
  doesn't need the gcrt)
- Split the CRT out of developer/library/lint into a separate c-runtime package

*** 998,1017 ****
  
  TRACEOBJS=                      \
          plockstat.o
  
  # NOTE: libc.so.1 must be linked with the minimal crti.o and crtn.o
! # modules whose source is provided in the $(SRC)/lib/common directory.
  # This must be done because otherwise the Sun C compiler would insert
  # its own versions of these modules and those versions contain code
  # to call out to C++ initialization functions.  Such C++ initialization
  # functions can call back into libc before thread initialization is
  # complete and this leads to segmentation violations and other problems.
  # Since libc contains no C++ code, linking with the minimal crti.o and
  # crtn.o modules is safe and avoids the problems described above.
  OBJECTS= $(CRTI) $(MOSTOBJS) $(CRTN)
! CRTSRCS= ../../common/sparcv9
  
  # include common library definitions
  include $(SRC)/lib/Makefile.lib
  include $(SRC)/lib/Makefile.lib.64
  
--- 998,1017 ----
  
  TRACEOBJS=                      \
          plockstat.o
  
  # NOTE: libc.so.1 must be linked with the minimal crti.o and crtn.o
! # modules whose source is provided in the $(SRC)/lib/crt directory.
  # This must be done because otherwise the Sun C compiler would insert
  # its own versions of these modules and those versions contain code
  # to call out to C++ initialization functions.  Such C++ initialization
  # functions can call back into libc before thread initialization is
  # complete and this leads to segmentation violations and other problems.
  # Since libc contains no C++ code, linking with the minimal crti.o and
  # crtn.o modules is safe and avoids the problems described above.
  OBJECTS= $(CRTI) $(MOSTOBJS) $(CRTN)
! CRTSRCS= ../../crt/sparcv9
  
  # include common library definitions
  include $(SRC)/lib/Makefile.lib
  include $(SRC)/lib/Makefile.lib.64