Merge branch 'erp5' into erp5-component
build cairo-xlib that is used in gtk-2.
add Pympler to measure memory usage in Ram Cache.
only one of revision and branch should be set in gitclone recipe.
Revert "only one of revision and branch should be set in gitclone recipe."

This reverts commit 32e8dfb1e7a0ec9ed0ccbef3f183ad38a00f9bb9.
version up : MariaDB 5.5.33.
version up : MariaDB 5.5.33a.
Merge remote-tracking branch 'master' into erp5-component
update md5sum.
Merge branch 'erp5-component' into erp5