Update the tic6x linker tests to match the current behaviour of the linker and readelf.

	PR binutils/16317
	* ld-tic6x/shlib-1.rd: Expect I attribute with RELA sections.
	* ld-tic6x/shlib-1b.rd: Likewise.
	* ld-tic6x/shlib-1r.rd: Likewise.
	* ld-tic6x/shlib-1rb.rd: Likewise.
	* ld-tic6x/shlib-app-1rd: Likewise.
	* ld-tic6x/shlib-app-1b.rd: Likewise.
	* ld-tic6x/shlib-app-1r.rd: Likewise.
	* ld-tic6x/shlib-app-1rb.rd: Likewise.
	* ld-tic6x/shlib-noindex.rd: Likewise.
	* ld-tic6x/static-app-1.rd: Likewise.
	* ld-tic6x/static-app-1b.rd: Likewise.
	* ld-tic6x/static-app-1r.rd: Likewise.
	* ld-tic6x/static-app-1rb.rd: Likewise.

	PR binutils/16318
	* ld-tic6x/tic6x.exp: Expect C6000 osabi value in relocatable
	objects.
A recent update to the binutils means that RELA sections now have the
SHF_INFO_LINK bit set, which shows up in readelf section dumps.  This
has broken a couple of IA64 testcases in the gas testsuite, which are
fixed by this patch.

	PR binutils/16317
	* gas/ia64/group-2.d: Expect I attribute with RELA sections.
	* gas/ia64/xdata.d: Likewise.
The MSP430 linker contains emulations for old and obsolete MCU types.
Since all MCUs now have their own specific linker script (courtesy of
TI) there is no need for these emulations and so this patch removes
them.

	* Makefile.am: Remove obsolete MSP430 emulations.
	* configure.tgt: Likewise.
	* emulparams/msp430all.sh: Likewise.
	* Makefile.in: Regenerate.
A recent change to the BFD library has meant that the osabi field in
ELF headers will be copied from input files.  This in turn has broken
the strip-10 test in the binutils testsuite, so this patch updates the
expected output.

	PR binutils/16318
	* binutils-all/strip-10.d: Allow "System V" in the osabi field.
When parsing a DW_FORM_ref_addr attribute the CU containing the
abbreviation may not be the current CU.  Thus we need to make sure
that when we read the abbreviation we use the correct CU.

	* dwarf2.c (find_abstract_instance_name): For DW_FORM_ref_addr
	attributes select the CU containing the abbreviation, which may not
	be the current CU.