Include an explicit assignment to the PATH environment variable in
the hook templates.

* subversion/libsvn_repos/repos.c
  (create_hooks): In each of the hook templates, include an explicit
  assignment of the PATH environment variable to SVN_BINARY_DIR, /bin, 
  and /usr/bin directories.

Index: subversion/libsvn_repos/repos.c
===================================================================
--- subversion/libsvn_repos/repos.c	(revision 11629)
+++ subversion/libsvn_repos/repos.c	(working copy)
@@ -313,6 +313,9 @@
       "# Here is an example hook script, for a Unix /bin/sh interpreter:"
       APR_EOL_STR
       APR_EOL_STR
+      "export PATH; PATH=" SVN_BINARY_DIR ":/bin:/usr/bin"
+      APR_EOL_STR
+      APR_EOL_STR
       "REPOS=\"$1\""
       APR_EOL_STR
       "USER=\"$2\""
@@ -433,6 +436,9 @@
       "# Here is an example hook script, for a Unix /bin/sh interpreter:"
       APR_EOL_STR
       APR_EOL_STR
+      "export PATH; PATH=" SVN_BINARY_DIR ":/bin:/usr/bin"
+      APR_EOL_STR
+      APR_EOL_STR
       "REPOS=\"$1\""
       APR_EOL_STR
       "TXN=\"$2\""
@@ -562,6 +568,9 @@
       "# Here is an example hook script, for a Unix /bin/sh interpreter:"
       APR_EOL_STR
       APR_EOL_STR
+      "export PATH; PATH=" SVN_BINARY_DIR ":/bin:/usr/bin"
+      APR_EOL_STR
+      APR_EOL_STR
       "REPOS=\"$1\""
       APR_EOL_STR
       "REV=\"$2\""
@@ -665,6 +674,9 @@
       "# Here is an example hook script, for a Unix /bin/sh interpreter:"
       APR_EOL_STR
       APR_EOL_STR
+      "export PATH; PATH=" SVN_BINARY_DIR ":/bin:/usr/bin"
+      APR_EOL_STR
+      APR_EOL_STR
       "REPOS=\"$1\""
       APR_EOL_STR
       "REV=\"$2\""
@@ -761,6 +773,9 @@
       "# Here is an example hook script, for a Unix /bin/sh interpreter:"
       APR_EOL_STR
       APR_EOL_STR
+      "export PATH; PATH=" SVN_BINARY_DIR ":/bin:/usr/bin"
+      APR_EOL_STR
+      APR_EOL_STR
       "REPOS=\"$1\""
       APR_EOL_STR
       "REV=\"$2\""