Hello Pedro,

here comes the fourth one for gas

Change log modifications for gas:

        * configure.in: Add new target x86_64-pc-mingw64
        * configure.tgt:        Add new target x86_64-pc-mingw64
        * config/obj-coff.h:    Add handling for TE_PEP target specific 
code and definitions
        * config/tc-i386.c:             Add new targets
                md_parse_option:                        Add targets to 
OPTION_64
                x86_64_target_format:   Add new method for setup proper 
default target cpu mode
        * config/te-pep.h:              Add new target definition header
                TE_PEP:                         Identifies new target 
architecture
                COFF_WITH_pex64:        Set proper includes in bfd
Change log modifications for gas/testsuite:

        * i386/immed64.d:       Add #pass for avoid proplems with 
alignment paddings
        * i386/rex.d:           Changed for target matching
        * i386/x86-64-addr32.d: Changed for target matching and padding
        * i386/x86-64-branch.d: Changed for target matching and padding
        * i386/x86-64-crx-suffix.d:     Changed for target matching and 
padding
        * i386/x86-64-crx.d:    Changed for target matching
        * i386/x86-64-drx-suffix.d:     Changed for target matching and 
padding
        * i386/x86-64-crx-suffix.d:     Changed for target matching and 
padding
        * i386/x86-64-opcode.d: Changed for target matching
        * i386/x86-64-pcrel.d:  Changed for target matching and relocation 
fixing
        * i386/x86-64-rip.d:    Changed for target matching and padding
        * i386/x86-64-stack-intel.d:    Changed for target matching and 
padding
        * i386/x86-64-stack-suffix.d:   Changed for target matching and 
padding
        * i386/x86-64-stack.d:  Changed for target matching and padding
        * i386/x86_64.d:        Changed section specifier to .text
Regards,
 i.A. Kai Tietz