Support MIPS elfoabi target

[Fu, Chao-Ying]

Hi,

  I found out that MIPS *-elf and *-elfoabi targets use different section
alignment, due to the check of TARGET_OS in tc-mips.c.
Should we use "strncmp (TARGET_OS, "elf", 3)" to match both
"elfoabi" and "elf", instead of "strcmp (TARGET_OS, "elf")"?

  Also, in "gas/configure.in", should we use "mips-*-*-elf*",
instead of "mips-*-*-elf"?

  Thanks!

Regards,
Chao-ying

gas/ChangeLog
2008-05-07  Chao-ying Fu  <fu@mips.com>

	* configure.in: Use mips-*-*-elf* to match elfoabi.
	* configure: Regenerate.
	* config/tc-mips.c (md_begin): Use strncmp to match elf and elfoabi.
	(mips_ip): Likewise.
	(s_change_sec): Likewise.
	(md_section_align): Likewise.

Index: gas/configure
===================================================================
RCS file: /cvs/src/src/gas/configure,v
retrieving revision 1.231
diff -r1.231 configure
11026c11026
<       mips-*-*-elf)   case "$endian" in
---
>       mips-*-*-elf*)  case "$endian" in
Index: gas/configure.in
===================================================================
RCS file: /cvs/src/src/gas/configure.in,v
retrieving revision 1.204
diff -r1.204 configure.in
402c402
<       mips-*-*-elf)   case "$endian" in
---
>       mips-*-*-elf*)  case "$endian" in
Index: gas/config/tc-mips.c
===================================================================
RCS file: /cvs/src/src/gas/config/tc-mips.c,v
retrieving revision 1.383
diff -r1.383 tc-mips.c
1960c1960
<       if (strcmp (TARGET_OS, "elf") != 0
---
>       if (strncmp (TARGET_OS, "elf", 3) != 0
1983c1983
<       if (strcmp (TARGET_OS, "elf") != 0)
---
>       if (strncmp (TARGET_OS, "elf", 3) != 0)
9555c9555
<                   if (IS_ELF && strcmp (TARGET_OS, "elf") != 0)
---
>                   if (IS_ELF && strncmp (TARGET_OS, "elf", 3) != 0)
12178c12178
<         if (strcmp (TARGET_OS, "elf") != 0)
---
>         if (strncmp (TARGET_OS, "elf", 3) != 0)
12190c12190
<         if (strcmp (TARGET_OS, "elf") != 0)
---
>         if (strncmp (TARGET_OS, "elf", 3) != 0)
13279c13279
<       if (strcmp (TARGET_OS, "elf") == 0)
---
>       if (strncmp (TARGET_OS, "elf", 3) == 0)