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

*** 21,33 ****
  #
  #
  # Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
- #ident  "%Z%%M% %I%     %E% SMI"
  
! CRTSRCS=        $(SRC)/lib/common/sparc
  
  include         $(SRC)/cmd/sgs/0@0/Makefile.com
  
  .KEEP_STATE:
  
--- 21,32 ----
  #
  #
  # Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
  
! CRTSRCS=        $(SRC)/lib/crt/sparcv7
  
  include         $(SRC)/cmd/sgs/0@0/Makefile.com
  
  .KEEP_STATE: