trunk: set the memory limit for the build system to 2^32-1 bytes instead of 2^32 bytes so that PHP will actually start up
fixed bug introduced in f36760d7898f1c46e90f432d4e6ee8d95333a84d
merge f42e4d4cacfdd67cb94e8e85e54b32a41e3f2203 to b69afab1df973a50265d351f113c52acadff04e3 (from master)