Fix issue #4901: make install-bdb-lib fail due to missing dependency

* build.conf:
  (libsvn_fs_base): add install dependency on $(SVN_FS_LIB_INSTALL_DEPS)


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1902335 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/build.conf b/build.conf
index 6dbe85d..df3a9cf 100644
--- a/build.conf
+++ b/build.conf
@@ -288,6 +288,7 @@
 sources = *.c bdb/*.c util/*.c
 install = bdb-lib
 libs = libsvn_delta libsvn_subr aprutil apriconv apr bdb libsvn_fs_util
+add-install-deps = $(SVN_FS_LIB_INSTALL_DEPS)
 msvc-export = ../libsvn_fs_base/fs_init.h
 msvc-delayload = yes