* features/Makefile, features/arm-with-iwmmxt.xml,	features/gdbserver-regs.xsl, features/number-regs.xsl,	features/sort-regs.xsl, features/xscale-iwmmxt.xml: New files.	* regformats/arm-with-iwmmxt.dat: Generate.	* NEWS: Mention iWMMXt.	* gdb.arch/iwmmxt-regs.c, gdb.arch/iwmmxt-regs.exp: New.	* Makefile.in (OBS): Add $(XML_BUILTIN).	(XML_DIR, XML_TARGET, XML_FILES, XML_BUILTIN): New.	(clean): Update.	(target.xml, xml-builtin.c, stamp-xml, arm-with-iwmmxt.o)	(arm-with-iwmmxt.c): New.	* config.in, configure: Regenerate.	* configure.ac: Check for iWMMXt. Handle srv_xmltarget,	srv_xmlbuiltin, and srv_xmlfiles. Define USE_XML.	* configure.srv: Mention srv_xmltarget and srv_xmlfiles.	(arm*-*-linux*): Add iWMMXt and regset support.	* linux-arm-low.c (PTRACE_GETWMMXREGS, PTRACE_SETWMMXREGS): Define.	(arm_fill_gregset, arm_store_gregset, arm_fill_wmmxregset)	(arm_store_wmmxregset, target_regsets): New.	* server.c (get_features_xml): Take annex argument. Check builtin	XML documents.	(handle_query): Handle multiple annexes. 
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