[Qemu-trivial] User mode support for Linux ELF files with no section headers

[Craig]

In user mode Linux, Qemu currently refuses to load ELF files that do not 
contain section headers (ehdr->e_shentsize == 0). Since section headers are not 
required in order to load an ELF file, simply removing the e_shentsize check in 
elf_check_ehdr() allows ELF binaries with no section headers to be run properly 
in user mode:

Signed-off-by: Craig Heffner <address@hidden>
--- qemu/linux-user/elfload.c   2011-12-02 15:16:07.637541215 -0500
+++ qemu-patched/linux-user/elfload.c   2011-12-02 15:27:24.061522798 -0500
@@ -1068,7 +1068,6 @@ static bool elf_check_ehdr(struct elfhdr
     return (elf_check_arch(ehdr->e_machine)
             && ehdr->e_ehsize == sizeof(struct elfhdr)
             && ehdr->e_phentsize == sizeof(struct elf_phdr)
-            && ehdr->e_shentsize == sizeof(struct elf_shdr)
             && (ehdr->e_type == ET_EXEC || ehdr->e_type == ET_DYN));
 }

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