Fix up the breakage when host != target

configure.in

@@ -296,5 +296,6 @@ AC_SUBST(DLLIB)
 AC_SUBST(BACKTRACELIB)
 
 AC_CONFIG_FILES(Makefile src/Makefile tests/Makefile tests/check-namespace.sh
-		doc/Makefile doc/common.tex include/libunwind-common.h)
+		doc/Makefile doc/common.tex include/libunwind-common.h
+                include/libunwind.h include/tdep/libunwind_i.h)
 AC_OUTPUT

include/libunwind.h.in

@@ -1,6 +1,8 @@
 /* Provide a real file - not a symlink - as it would cause multiarch conflicts
    when multiple different arch releases are installed simultaneously.  */
 
+#ifndef UNW_REMOTE_ONLY
+
 #if defined __arm__
 # include "libunwind-arm.h"
 #elif defined __hppa__
@@ -20,3 +22,9 @@
 #else
 # error "Unsupported arch"
 #endif
+
+#else /* UNW_REMOTE_ONLY */
+
+# include "libunwind-@arch@.h"
+
+#endif /* UNW_REMOTE_ONLY */

include/tdep/jmpbuf.h

@@ -1,6 +1,8 @@
 /* Provide a real file - not a symlink - as it would cause multiarch conflicts
    when multiple different arch releases are installed simultaneously.  */
 
+#ifndef UNW_REMOTE_ONLY
+
 #if defined __arm__
 # include "tdep-arm/jmpbuf.h"
 #elif defined __hppa__
@@ -20,3 +22,5 @@
 #else
 # error "Unsupported arch"
 #endif
+
+#endif /* !UNW_REMOTE_ONLY */

include/tdep/libunwind_i.h.in

@@ -1,6 +1,8 @@
 /* Provide a real file - not a symlink - as it would cause multiarch conflicts
    when multiple different arch releases are installed simultaneously.  */
 
+#ifndef UNW_REMOTE_ONLY
+
 #if defined __arm__
 # include "tdep-arm/libunwind_i.h"
 #elif defined __hppa__
@@ -20,3 +22,10 @@
 #else
 # error "Unsupported arch"
 #endif
+
+
+#else /* UNW_REMOTE_ONLY */
+
+# include "tdep-@arch@/libunwind_i.h"
+
+#endif /* UNW_REMOTE_ONLY */

src/dwarf/Gfind_proc_info-lsb.c

@@ -241,7 +241,7 @@ file_error:
 static int
 find_binary_for_address (unw_word_t ip, char *name, size_t name_size)
 {
-#ifdef __linux
+#if defined(__linux) && (!UNW_REMOTE_ONLY)
   struct map_iterator mi;
   int found = 0;
   int pid = getpid ();