Update the assembler to use a version of 3 when generating the header of the .debug_l...

Update the assembler to use a version of 3 when generating the header of the .debug_line section.

	PR 23941
gas	* dwarf2dbg.c (DWARF2_LINE_VERSION): Change to 3.
	* testsuite/gas/elf/dwarf2-3.d: Update expected output.
	* testsuite/gas/elf/dwarf2-5.d: Likewise.
	* testsuite/gas/i386/debug1.d: Likewise.
	* testsuite/gas/i386/dw2-compress-1.d: Likewise.
	* testsuite/gas/i386/dw2-compress-3a.d: Likewise.
	* testsuite/gas/i386/dw2-compress-3b.d: Likewise.
	* testsuite/gas/i386/dw2-compressed-1.d: Likewise.
	* testsuite/gas/i386/dw2-compressed-3a.d: Likewise.
	* testsuite/gas/i386/dw2-compressed-3b.d: Likewise.
	* testsuite/gas/ia64/pr13167.d: Likewise.
	* testsuite/gas/mips/loc-swap-2.d: Likewise.
	* testsuite/gas/mips/loc-swap.d: Likewise.
	* testsuite/gas/mips/micromips@loc-swap-2.d: Likewise.
	* testsuite/gas/mips/micromips@loc-swap.d: Likewise.
	* testsuite/gas/mips/mips16@loc-swap-2.d: Likewise.
	* testsuite/gas/mips/mips16@loc-swap.d: Likewise.
	* testsuite/gas/mips/mips16e@loc-swap.d: Likewise.

binutils* testsuite/binutils-all/i386/compressed-1a.d: Update expected output.
	* testsuite/binutils-all/x86-64/compressed-1a.d: Likewise.