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

@@ -979,20 +979,20 @@
 
 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.
+# 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= ../../common/amd64
+CRTSRCS= ../../crt/amd64
 
 # include common library definitions
 include ../../Makefile.lib
 include ../../Makefile.lib.64