./run: Adjust $PATH to include all libguestfs binaries.

Instead of typing:

  ./run ./fish/guestfish ...

you can now use:

  ./run guestfish ...

This is shorter, but there are also two good reasons for this change:
It never made any sense to run the system-installed guestfish (or
other) binary.  It would be unlikely to work.  Also binaries in
libguestfs should be able to call other binaries freely without adding
special exceptions (which we had before this change).

run.in

@@ -23,7 +23,7 @@
 # With this script you can run all the virt tools without needing to
 # install them first.  You just have to do for example:
 #
-#   ./run ./inspector/virt-inspector [args ...]
+#   ./run virt-inspector [args ...]
 #
 # This works for any C program, virt tools, and most non-C bindings
 # and programs in the libguestfs distribution.
@@ -72,13 +72,9 @@ run: warning: has not been set automatically.
 EOF
 fi
 
-# Set the PATH to contain guestunmount (called by umount-local API)
-# and virt-resize (called by virt-builder).
-if [ -z "$PATH" ]; then
-    PATH="$b/fuse:$b/resize"
-else
-    PATH="$b/fuse:$b/resize:$PATH"
-fi
+# Set the PATH to contain all the libguestfs binaries.  There are a
+# lot of binaries, so a lot of path entries.
+PATH="$d/align:$d/builder:$d/cat:$d/df:$d/edit:$d/erlang:$d/fish:$d/format:$d/fuse:$d/rescue:$d/resize:$d/sparsify:$d/sysprep:$d/test-tool:$d/tools:$PATH"
 export PATH
 
 # Set LD_LIBRARY_PATH to contain library.
@@ -148,19 +144,13 @@ else
 fi
 export CLASSPATH
 
-# For Erlang.
+# For Erlang (note $PATH is adjusted above to include erl-guestfs).
 if [ -z "$ERL_LIBS" ]; then
     ERL_LIBS="$b/erlang"
 else
     ERL_LIBS="$b/erlang:$ERL_LIBS"
 fi
 export ERL_LIBS
-if [ -z "$PATH" ]; then
-    PATH="$b/erlang"
-else
-    PATH="$b/erlang:$PATH"
-fi
-export PATH
 
 # For Lua.
 export LUA=@LUA@