Fix problem with relocs in read-only sections for C++ code.

	* config/ia64/sysv4.h (SELECT_SECTION): Use data_section if
	flag_pic and RELOC.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@33239 138bc75d-0d04-0410-961f-82ee72b054a4