apc_bin.c:498:12: warning: variable 't' set but not used [-Wunused-but-set-variable]
apc_cache.c:655:2: warning: enumeration value 'APC_CONTEXT_NONE' not handled in switch [-Wswitch]
apc_lock.c:67:1: warning: control reaches end of non-void function [-Wreturn-type] + make apc_lock_ready reliable
php_apc.c:795:1: warning: label 'leave' defined but not used [-Wunused-label]
apc_signal.c:75:13: warning: 'apc_clear_cache' defined but not used [-Wunused-function]
revert previous, only add return 0 (to fix build warning)
Merge pull request #10 from remicollet/issue-compat

Warning free build