add launchpad bug reports without comments

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+mips linux-user builds occasionly crash randomly only to be fixed by a full clean re-build
+
+From time to time I find check-tcg crashes with a one of the MIPS binaries. The last time it crashed was running the test:
+
+  ./mips64el-linux-user/qemu-mips64el ./tests/tcg/mips64el-linux-user/threadcount
+
+Inevitably after some time noodling around wondering what could be causing this weird behaviour I wonder if it is a build issue. I wipe all the mips* build directories, re-run configure and re-build and voila problem goes away.
+
+It seems there must be some sort of build artefact which isn't being properly re-generated on a build update which causes weird problems. Additional data point if I:
+
+  rm -rf mips64el-linux-user
+  ../../configure
+  make
+
+then I see failures in mip32 builds - eg:
+
+    GEN     mipsn32el-linux-user/config-target.h
+  In file included from /home/alex/lsrc/qemu.git/linux-user/syscall_defs.h:10,
+                   from /home/alex/lsrc/qemu.git/linux-user/qemu.h:16,
+                   from /home/alex/lsrc/qemu.git/linux-user/linuxload.c:5:
+  /home/alex/lsrc/qemu.git/linux-user/mips64/syscall_nr.h:1: error: unterminated #ifndef
+   #ifndef LINUX_USER_MIPS64_SYSCALL_NR_H
+
+  make[1]: *** [/home/alex/lsrc/qemu.git/rules.mak:69: linux-user/linuxload.o] Error 1
+  make[1]: *** Waiting for unfinished jobs....
+
+which implies there is a cross dependency between different targets somewhere. If I executed:
+
+  rm -rf mips*
+
+before re-configuring and re-building then everything works again.
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