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

*** 74,85 ****
  
  xpg4_%.o:    $(SRC)/common/util/%.c
          $(COMPILE.c) -o $@ $<
          $(POST_PROCESS_O)
  
! %values-xpg4.o:         ../../lib/common/common/values-xpg4.c
!         $(COMPILE.c) -o $@ ../../lib/common/common/values-xpg4.c
  
  $(CPFILE):      $(PROG)
          @$(RM) $(CPFILE); $(LN) $(PROG) $(CPFILE)
  
  $(LNFILE):      $(PROG)
--- 74,85 ----
  
  xpg4_%.o:    $(SRC)/common/util/%.c
          $(COMPILE.c) -o $@ $<
          $(POST_PROCESS_O)
  
! %values-xpg4.o:         ../../lib/crt/common/values-xpg4.c
!         $(COMPILE.c) -o $@ ../../lib/crt/common/values-xpg4.c
  
  $(CPFILE):      $(PROG)
          @$(RM) $(CPFILE); $(LN) $(PROG) $(CPFILE)
  
  $(LNFILE):      $(PROG)