sparc-sun-solaris2 and sparc64-sun-solaris2 config

sparc-sun-solaris2 and sparc64-sun-solaris2 config

A bunch of ld tests fail on these targets due to the test specifying
-melf32_sparc or -melf64_sparc, which according to ld/configure.tgt
are valid.  However, config.bfd lacks the corresponding bfd target
resulting in an error.  Fix that by adding target_selvecs.

bfd/
	* config.bfd (sparc-*-solaris2*): Add sparc_elf32_vec.
	(sparc64-*-solaris2*): Add sparc_elf64_vec and
	sparc_elf32_vec.
ld/
	* testsuite/ld-sparc/sparc.exp (sparc64tests): Set text-segment
	base for some tests.
	* testsuite/ld-sparc/gotop32.dd: Match solaris output.
	* testsuite/ld-sparc/gotop32.sd: Likewise.
	* testsuite/ld-sparc/gotop32.td: Likewise.
	* testsuite/ld-sparc/gotop64.dd: Likewise.
	* testsuite/ld-sparc/gotop64.sd: Likewise.
	* testsuite/ld-sparc/gotop64.td: Likewise.
	* testsuite/ld-sparc/tlsg32.sd: Likewise.
	* testsuite/ld-sparc/tlsg64.sd: Likewise.
	* testsuite/ld-sparc/tlspie32.dd: Likewise.
	* testsuite/ld-sparc/tlspie64.dd: Likewise.
	* testsuite/ld-sparc/tlssunbin32.dd: Likewise.
	* testsuite/ld-sparc/tlssunbin32.sd: Likewise.
	* testsuite/ld-sparc/tlssunbin32.td: Likewise.
	* testsuite/ld-sparc/tlssunbin64.dd: Likewise.
	* testsuite/ld-sparc/tlssunbin64.sd: Likewise.
	* testsuite/ld-sparc/tlssunbin64.td: Likewise.
	* testsuite/ld-sparc/tlssunnopic32.dd: Likewise.
	* testsuite/ld-sparc/tlssunnopic32.sd: Likewise.
	* testsuite/ld-sparc/tlssunnopic64.dd: Likewise.
	* testsuite/ld-sparc/tlssunnopic64.sd: Likewise.
	* testsuite/ld-sparc/tlssunpic32.dd: Likewise.
	* testsuite/ld-sparc/tlssunpic32.sd: Likewise.
	* testsuite/ld-sparc/tlssunpic32.td: Likewise.
	* testsuite/ld-sparc/tlssunpic64.dd: Likewise.
	* testsuite/ld-sparc/tlssunpic64.sd: Likewise.
	* testsuite/ld-sparc/tlssunpic64.td: Likewise.
	* testsuite/ld-sparc/wdispcall.dd: Likewise.