Cleanup cache

.travis.yml

@@ -16,7 +16,7 @@ cache:
 
 env:
   global:
-    - BOOTSTRAP_VERSION=2
+    - BOOTSTRAP_VERSION=3
 
 jobs:
   # linux with win32 cross-compilation

build.sh

@@ -36,7 +36,7 @@ BUILD_VERSION=$((${LAST_BUILD_VERSION} + 1))
 mkdir -p ${PAWPAW_BUILDDIR}
 echo ${BOOTSTRAP_VERSION} > ${PAWPAW_BUILDDIR}/.last-bootstrap-version
 
-if [ ${BUILD_VERSION} -lt 4 ]; then
+if [ ${BUILD_VERSION} -le 4 ]; then
     echo ${BUILD_VERSION} > ${PAWPAW_BUILDDIR}/.last-build-version
 fi