[source] build: fix cleaning configured stamp file

[LEDE Commits]

blogic pushed a commit to source.git, branch master:
https://git.lede-project.org/4eb371e363587e4fd1f685c99f654895e198c517

commit 4eb371e363587e4fd1f685c99f654895e198c517
Author: Yousong Zhou <yszhou4tech at gmail.com>
AuthorDate: Mon Sep 26 21:14:50 2016 +0800

    build: fix cleaning configured stamp file
    
    We have packages with their own parts appended to standard STAMP_CONFIGURED
    (mostly with an underscore character).  This will render the current
    STAMP_CONFIGURED_WILD setting invalid and the build system may miss a rebuild
    on config change
    
     1. Build with config A
     2. Build with config B, yet .configured_A_xx did not get cleaned
     3. Return to config A, but rebuild will not happen because stamp file
        of config A still exists
    
    Signed-off-by: Yousong Zhou <yszhou4tech at gmail.com>
---
 include/package.mk | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/package.mk b/include/package.mk
index fa5c4e7..99e401e 100644
--- a/include/package.mk
+++ b/include/package.mk
@@ -64,7 +64,7 @@ else
   STAMP_PREPARED=$(PKG_BUILD_DIR)/.prepared$(if $(QUILT)$(DUMP),,_$(shell $(call find_md5,${CURDIR} $(PKG_FILE_DEPENDS),))$(call confvar,$(PKG_PREPARED_DEPENDS)))
 endif
 STAMP_CONFIGURED=$(PKG_BUILD_DIR)/.configured$(if $(DUMP),,_$(call confvar,$(PKG_CONFIG_DEPENDS)))
-STAMP_CONFIGURED_WILDCARD=$(patsubst %_$(call confvar,$(PKG_CONFIG_DEPENDS)),%_*,$(STAMP_CONFIGURED))
+STAMP_CONFIGURED_WILDCARD=$(PKG_BUILD_DIR)/.configured_*
 STAMP_BUILT:=$(PKG_BUILD_DIR)/.built
 STAMP_INSTALLED:=$(STAGING_DIR)/stamp/.$(PKG_DIR_NAME)$(if $(BUILD_VARIANT),.$(BUILD_VARIANT),)_installed